All Lessons

List of all Lessons

These lessons are listed with newest lessons first.

• OVERVIEW of lessons on arithmetic word problems in Numeric_Fractions, by ikleyn(49985)   Seen 949 times.
• Entertainment arithmetic word problems solved in a right way in Numeric_Fractions, by ikleyn(49985)   Seen 332 times.
• Simple arithmetic problems to solve by a backward method in Numeric_Fractions, by ikleyn(49985)   Seen 816 times.
• Real life arithmetic problems in Numeric_Fractions, by ikleyn(49985)   Seen 724 times.
• Clock hands arithmetic word problems in Numeric_Fractions, by ikleyn(49985)   Seen 626 times.
• Arithmetic word problems solved using fractions in Numeric_Fractions, by ikleyn(49985)   Seen 895 times.
• Simple problems on filling or emptying a pool or a reservoir in Numeric_Fractions, by ikleyn(49985)   Seen 982 times.
• Simple arithmetic word problems solved in a right way in Numeric_Fractions, by ikleyn(49985)   Seen 799 times.
• Solving arithmetic word problems by reasoning in Numeric_Fractions, by ikleyn(49985)   Seen 925 times.
• ALGEBRA-I - YOUR ONLINE TEXTBOOK in Quadratic_Equations, by ikleyn(49985)   Seen 16507 times.
• OVERVIEW of my lessons from the Finance section in this site in Finance, by ikleyn(49985)   Seen 187 times.
• Amortizing a debt on a credit card in Finance, by ikleyn(49985)   Seen 146 times.
• Mortgage problems in Finance, by ikleyn(49985)   Seen 162 times.
• Loan problems in Finance, by ikleyn(49985)   Seen 178 times.
• Variable withdrawals from a compounded account (sinking fund) in Finance, by ikleyn(49985)   Seen 205 times.
• Annual depositing and semi-annual compounding in ordinary annuity saving plan in Finance, by ikleyn(49985)   Seen 128 times.
• Ordinary annuity account with non-zero initial deposit as a combined total of two accounts in Finance, by ikleyn(49985)   Seen 149 times.
• Regular withdrawals from an annuity payout account in Finance, by ikleyn(49985)   Seen 201 times.
• Find future value for an Annuity Due saving plan in Finance, by ikleyn(49985)   Seen 167 times.
• Find a value of regular deposits for an Ordinary Annuity saving plan in Finance, by ikleyn(49985)   Seen 205 times.
• Find future value of an Ordinary Annuity saving plan in Finance, by ikleyn(49985)   Seen 205 times.
• Problems on continuously compounded accounts in Finance, by ikleyn(49985)   Seen 138 times.
• Problems on discretely compounded accounts in Finance, by ikleyn(49985)   Seen 160 times.
• Problems on simple interest accounts in Finance, by ikleyn(49985)   Seen 149 times.
• OVERVIEW of lessons on plotting and analyzing functions in Coordinate-system, by ikleyn(49985)   Seen 393 times.
• Miscellaneous problems on plots of functions in Coordinate-system, by ikleyn(49985)   Seen 366 times.
• Finding inverse functions in Coordinate-system, by ikleyn(49985)   Seen 241 times.
• Constructing a function based on its given properties in Coordinate-system, by ikleyn(49985)   Seen 413 times.
• Writing a function rule for a function based on its wording description in Coordinate-system, by ikleyn(49985)   Seen 204 times.
• Describe transformations from the given parent function to final function in Coordinate-system, by ikleyn(49985)   Seen 203 times.
• Write a function which is a result of given transformations of the parent function in Coordinate-system, by ikleyn(49985)   Seen 234 times.
• The domain and the range of transformed functions in Coordinate-system, by ikleyn(49985)   Seen 882 times.
• Do not fall into a TRAP when analyzing problems on trigonometric functions in Coordinate-system, by ikleyn(49985)   Seen 89 times.
• Analyzing periodic trigonometric functions for the amplitude, the period, vertical and horizontal shifts in Coordinate-system, by ikleyn(49985)   Seen 454 times.
• HOW TO PLOT transformed periodic trigonometry functions in Coordinate-system, by ikleyn(49985)   Seen 355 times.
• HOW TO write functions for transformed plots in Coordinate-system, by ikleyn(49985)   Seen 436 times.
• HOW TO PLOT transformed functions in Coordinate-system, by ikleyn(49985)   Seen 440 times.
• Compressing and stretching graphs in Coordinate-system, by ikleyn(49985)   Seen 387 times.
• Finding x-intercepts and y-intercepts in Coordinate-system, by ikleyn(49985)   Seen 439 times.
• OVERVIEW of lessons on proportions in Proportions, by ikleyn(49985)   Seen 2358 times.
• Entertainment problems on proportions in Proportions, by ikleyn(49985)   Seen 499 times.
• Selected problems on proportions from the archive in Proportions, by ikleyn(49985)   Seen 1487 times.
• Problems on proportions for mental solution in Proportions, by ikleyn(49985)   Seen 1240 times.
• Advanced problems on proportions in Proportions, by ikleyn(49985)   Seen 611 times.
• Using proportions to solve some nice simple Travel and Distance problems in Proportions, by ikleyn(49985)   Seen 96 times.
• Using proportions to solve word problems in Geometry in Proportions, by ikleyn(49985)   Seen 418 times.
• HOW TO algebraize and solve these problems using proportions in Proportions, by ikleyn(49985)   Seen 2666 times.
• Using proportions to estimate the number of fish in a lake in Proportions, by ikleyn(49985)   Seen 3453 times.
• Typical problems on proportions in Proportions, by ikleyn(49985)   Seen 1182 times.
• Using proportions to solve Chemistry problems in Proportions, by ikleyn(49985)   Seen 10157 times.
• Using proportions to solve word problems in Physics in Proportions, by ikleyn(49985)   Seen 20507 times.
• Using proportions to solve word problems in Proportions, by ikleyn(49985)   Seen 23236 times.
• Proportions in Proportions, by ikleyn(49985)   Seen 7273 times.
• OVERVIEW of miscellanious solved problems on divisibility of integer numbers in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 1784 times.
• Nice entertainment problems related to divisibility properties in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 705 times.
• Math Circle level problem on lockers and divisors of integer numbers in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 991 times.
• Find a triangle with integer side lengths and integer area in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 285 times.
• Two-digit numbers with digit "9" in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 291 times.
• Find the sum of digits of integer numbers in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 200 times.
• Miscellaneous problems on divisibility numbers in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 724 times.
• How many integers of the form n^2 + 18n + 13 are perfect squares in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 615 times.
• Solving Diophantine equations in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 1122 times.
• Find the last two digits of the number 3^123 + 7^123 + 9^123 in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 737 times.
• Find the last three digits of these numbers in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 1547 times.
• What is the last digit of the number a^n ? in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 722 times.
• Why 3^n + 7^n - 2 is divisible by 8 for all positive integer n ? in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 306 times.
• Find the remainder of division in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 365 times.
• How many integer numbers in the range 1-300 are divisible by at least one of the integers 4, 6 and 15 ? in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 764 times.
• How many 3-digit numbers are not divisible by 2; not divisible by 3; not divisible by either 2 or 3 in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 2603 times.
• How many three-digit numbers are multiples of both 5 and 7? in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 379 times.
• Problems on divisors of a given number in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 1477 times.
• Composite number of the form (4n+3) must have a prime divisor of the form (4n+3) in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 762 times.
• Proving an equation has no integer solutions in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 3732 times.
• Quadratic polynomial with odd integer coefficients can not have a rational root in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 2083 times.
• Solving equations in integer numbers in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 463 times.
• Relatively prime numbers help to solve problems in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 1562 times.
• Finding Greatest Common Divisor of integer numbers in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 1020 times.
• Introductory problems on divisibility of integer numbers in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 1358 times.
• The number which gives remainder 4 when divided by 7, remainder 5 when divided by 8 and remainder 6 when divided by 9 in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 610 times.
• The number that leaves a remainder 1 when divided by 2, by 3, by 4, by 5 and so on until 9 in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 4054 times.
• Light flashes on a Christmas tree and a Least Common Multiple in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 821 times.
• OVERVIEW of Divisibility rules by 2, 3, 4, 5, 6, 9, 10 and 11 in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 3475 times.
• Math circle level problem on finding remainders in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 876 times.
• Math circle level problem on restoring digit in the product of two 16-digit numbers in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 1031 times.
• Math circle level problems on divisibility numbers in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 485 times.
• Can there be a perfect square ? in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 1410 times.
• Restore the omitted digit in a number in a way that the number is divisible by 11 in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 1675 times.
• Restore the omitted digit in a number in a way that the number is divisible by 9 in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 1678 times.
• Divisibility by 11 rule in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 11403 times.
• Divisibility by 10 rule in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 2435 times.
• Divisibility by 9 rule in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 5379 times.
• Divisibility by 6 rule in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 2737 times.
• Divisibility by 5 rule in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 3637 times.
• Divisibility by 4 rule in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 3351 times.
• Divisibility by 3 rule in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 2726 times.
• Divisibility by 2 rule in Divisibility_and_Prime_Numbers, by ikleyn(49985)   Seen 2904 times.
• OVERVIEW of my lessons on solving equations containing radicals in Radicals, by ikleyn(49985)   Seen 554 times.
• Solving systems of equations containing radicals in Radicals, by ikleyn(49985)   Seen 85 times.
• Advanced problems on solving equations containing radicals in Radicals, by ikleyn(49985)   Seen 424 times.
• HOW TO solve equations containing radicals in Radicals, by ikleyn(49985)   Seen 10051 times.
• OVERVIEW of lessons on finding the minimum/maximum of a quadratic function in Quadratic_Equations, by ikleyn(49985)   Seen 1581 times.
• Advanced lesson on finding minima of (x+1)(x+2)(x+3)(x+4) in Quadratic_Equations, by ikleyn(49985)   Seen 2931 times.
• Minimal distance between sailing ships in a sea in Quadratic_Equations, by ikleyn(49985)   Seen 829 times.
• Find the point on a given straight line closest to a given point in the plane in Quadratic_Equations, by ikleyn(49985)   Seen 586 times.
• When is the best time to sell a pig ? in Quadratic_Equations, by ikleyn(49985)   Seen 1108 times.
• Using quadratic functions to solve problems on maximizing revenue/profit in Quadratic_Equations, by ikleyn(49985)   Seen 20079 times.
• Finding the maximum area of the window of a special form in Quadratic_Equations, by ikleyn(49985)   Seen 1213 times.
• A rancher planning to fence two adjacent rectangular corrals to enclose the maximal area in Quadratic_Equations, by ikleyn(49985)   Seen 4690 times.
• A farmer planning to fence a rectangular area along the river to enclose the maximal area in Quadratic_Equations, by ikleyn(49985)   Seen 6397 times.
• A farmer planning to fence a rectangular garden to enclose the maximal area in Quadratic_Equations, by ikleyn(49985)   Seen 4164 times.
• A rectangle with a given perimeter which has the maximal area is a square in Quadratic_Equations, by ikleyn(49985)   Seen 5566 times.
• Briefly on finding the vertex of a parabola in Quadratic_Equations, by ikleyn(49985)   Seen 1464 times.
• HOW TO complete the square to find the vertex of a parabola in Quadratic_Equations, by ikleyn(49985)   Seen 1734 times.
• Briefly on finding the minimum/maximum of a quadratic function in Quadratic_Equations, by ikleyn(49985)   Seen 2688 times.
• HOW TO complete the square to find the minimum/maximum of a quadratic function in Quadratic_Equations, by ikleyn(49985)   Seen 10506 times.
• OVERVIEW of lessons on solving quadratic equations in Quadratic_Equations, by ikleyn(49985)   Seen 2298 times.
• Entertainment problems on quadratic equations in Quadratic_Equations, by ikleyn(49985)   Seen 302 times.
• HOW TO solve the problem on quadratic equation mentally and avoid boring calculations in Quadratic_Equations, by ikleyn(49985)   Seen 2946 times.
• Rare beauty investment problem to solve using quadratic equation in Quadratic_Equations, by ikleyn(49985)   Seen 709 times.
• Business-related problems to solve them using quadratic equations in Quadratic_Equations, by ikleyn(49985)   Seen 727 times.
• Challenging word problems solved using quadratic equations in Quadratic_Equations, by ikleyn(49985)   Seen 2832 times.
• Word problems on engineering constructions of parabolic shapes in Quadratic_Equations, by ikleyn(49985)   Seen 170 times.
• Using quadratic equations to solve word problems in Quadratic_Equations, by ikleyn(49985)   Seen 93206 times.
• Using Vieta's theorem to solve quadratic equations and related problems in Quadratic_Equations, by ikleyn(49985)   Seen 2449 times.
• Who is who in quadratic equations in Quadratic_Equations, by ikleyn(49985)   Seen 3772 times.
• Solving quadratic equations without quadratic formula in Quadratic_Equations, by ikleyn(49985)   Seen 21479 times.
• HOW TO solve quadratic equation by completing the square - Learning by examples in Quadratic_Equations, by ikleyn(49985)   Seen 1380 times.
• HOW TO complete the square - Learning by examples in Quadratic_Equations, by ikleyn(49985)   Seen 1592 times.
• PROOF of quadratic formula by completing the square in Quadratic_Equations, by ichudov(507)   Seen 40677 times.
• Introduction into Quadratic Equations in Quadratic_Equations, by ichudov(507)   Seen 100500 times.
• OVERVIEW of lessons on Evaluating expressions in Evaluation_Word_Problems, by ikleyn(49985)   Seen 1633 times.
• Advanced evaluating problems in Evaluation_Word_Problems, by ikleyn(49985)   Seen 1035 times.
• Math circle level problems on evaluating expressions in Evaluation_Word_Problems, by ikleyn(49985)   Seen 354 times.
• Upper level problem on evaluating an expression of polynomial roots in Evaluation_Word_Problems, by ikleyn(49985)   Seen 131 times.
• Finding coefficients of decomposition of a rational function in Evaluation_Word_Problems, by ikleyn(49985)   Seen 184 times.
• Upper league problem on evaluating the sum in Evaluation_Word_Problems, by ikleyn(49985)   Seen 209 times.
• Math Olympiad level problem on evaluating a 9-degree polynomial in Evaluation_Word_Problems, by ikleyn(49985)   Seen 326 times.
• Math circle level problems on finding polynomials with prescribed roots in Evaluation_Word_Problems, by ikleyn(49985)   Seen 905 times.
• Evaluating a function defined by functional equation in Evaluation_Word_Problems, by ikleyn(49985)   Seen 275 times.
• Find the number of factorable quadratic polynomials of special form in Evaluation_Word_Problems, by ikleyn(49985)   Seen 346 times.
• Lowering a degree method in Evaluation_Word_Problems, by ikleyn(49985)   Seen 442 times.
• Miscellaneous evaluating problems in Evaluation_Word_Problems, by ikleyn(49985)   Seen 1017 times.
• Evaluate the sum of the coefficients of a polynomial in Evaluation_Word_Problems, by ikleyn(49985)   Seen 1880 times.
• Evaluating trigonometric expressions in Evaluation_Word_Problems, by ikleyn(49985)   Seen 1023 times.
• Problems on evaluating in Geometry in Evaluation_Word_Problems, by ikleyn(49985)   Seen 109 times.
• Solving equations that contain infinitely many radicals in Evaluation_Word_Problems, by ikleyn(49985)   Seen 811 times.
• Evaluating expressions that contain infinitely many square roots in Evaluation_Word_Problems, by ikleyn(49985)   Seen 1048 times.
• Advanced problems on Vieta's theorem in Evaluation_Word_Problems, by ikleyn(49985)   Seen 2978 times.
• Problems on Vieta's formulas in Evaluation_Word_Problems, by ikleyn(49985)   Seen 2346 times.
• HOW TO evaluate functions of roots of a cubic and quartic equation in Evaluation_Word_Problems, by ikleyn(49985)   Seen 2640 times.
• HOW TO evaluate functions of roots of a quadratic equation in Evaluation_Word_Problems, by ikleyn(49985)   Seen 1552 times.
• Advanced lesson on evaluating expressions in Evaluation_Word_Problems, by ikleyn(49985)   Seen 1290 times.
• HOW TO evaluate expressions involving x + 1/x, x^2 + 1/x^2, x^3 + 1/x^3 and x^5 + 1/x^5 in Evaluation_Word_Problems, by ikleyn(49985)   Seen 1774 times.
• ALGEBRA-II - YOUR ONLINE TEXTBOOK in Complex_Numbers, by ikleyn(49985)   Seen 9944 times.
• OVERVIEW of lessons on Probability, section 3 in Probability-and-statistics, by ikleyn(49985)   Seen 138 times.
• Probability problems similar to a coinciding birthdays problem in Probability-and-statistics, by ikleyn(49985)   Seen 109 times.
• Probability poblems on long chains of related events in Probability-and-statistics, by ikleyn(49985)   Seen 136 times.
• Upper League geometric probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 136 times.
• Upper league problems on conditional probability in Probability-and-statistics, by ikleyn(49985)   Seen 175 times.
• Upper league problem to maximize winning in a game with 20-sided rolling die in Probability-and-statistics, by ikleyn(49985)   Seen 197 times.
• Upper league probability problems on Stars and Bars methodology in Probability-and-statistics, by ikleyn(49985)   Seen 195 times.
• Upper league entertainment probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 182 times.
• Advanced probability problems related to combinations in Probability-and-statistics, by ikleyn(49985)   Seen 229 times.
• Probabilistic analysis of testing procedures in industry in Probability-and-statistics, by ikleyn(49985)   Seen 196 times.
• Probabilistic analysis of testing procedures in health care in Probability-and-statistics, by ikleyn(49985)   Seen 244 times.
• Binomial distribution problems on overbooking flights in Probability-and-statistics, by ikleyn(49985)   Seen 155 times.
• Advanced binomial distribution problems in Probability-and-statistics, by ikleyn(49985)   Seen 383 times.
• A company bids on two separate contracts in Probability-and-statistics, by ikleyn(49985)   Seen 252 times.
• Probabilistic analysis of a court verdicts in Probability-and-statistics, by ikleyn(49985)   Seen 266 times.
• OVERVIEW of lessons on logarithms, logarithmic equations and relevant word problems in logarithm, by ikleyn(49985)   Seen 3874 times.
• Upper level problems on solving logarithmic equations in logarithm, by ikleyn(49985)   Seen 175 times.
• Entertainment problems on exponential growth in logarithm, by ikleyn(49985)   Seen 1056 times.
• Entertainment problems on logarithms in logarithm, by ikleyn(49985)   Seen 1126 times.
• Entertainment problem: Uninterrupted withdrawing money from a retirement fund in logarithm, by ikleyn(49985)   Seen 499 times.
• Tricky problem on solving a logarithmic system of equations in logarithm, by ikleyn(49985)   Seen 851 times.
• Problems on continuously compound accounts in logarithm, by ikleyn(49985)   Seen 1596 times.
• Problems on discretely compound accounts in logarithm, by ikleyn(49985)   Seen 1682 times.
• Miscellaneous problems on exponential growth/decay in logarithm, by ikleyn(49985)   Seen 608 times.
• Inflation and Salary problems in logarithm, by ikleyn(49985)   Seen 1465 times.
• Problems on appreciated/depreciated values in logarithm, by ikleyn(49985)   Seen 1365 times.
• A medication decay in a human's body in logarithm, by ikleyn(49985)   Seen 770 times.
• Bacteria growth problems in logarithm, by ikleyn(49985)   Seen 9432 times.
• Carbon dating problems in logarithm, by ikleyn(49985)   Seen 5153 times.
• Radioactive decay problems in logarithm, by ikleyn(49985)   Seen 5496 times.
• Population growth problems in logarithm, by ikleyn(49985)   Seen 2273 times.
• Solving problem on Newton Law of cooling in logarithm, by ikleyn(49985)   Seen 3151 times.
• Using logarithms to solve real world problems in logarithm, by ikleyn(49985)   Seen 73804 times.
• Solving logarithmic inequalities in logarithm, by ikleyn(49985)   Seen 1674 times.
• Proving equalities with logarithms in logarithm, by ikleyn(49985)   Seen 1278 times.
• Solving really interesting and educative problem on logarithmic equation containing a HUGE underwater stone in logarithm, by ikleyn(49985)   Seen 140 times.
• Solving advanced logarithmic equations in logarithm, by ikleyn(49985)   Seen 1384 times.
• Solving logarithmic equations in logarithm, by ikleyn(49985)   Seen 9823 times.
• Simplifying expressions with logarithms in logarithm, by ikleyn(49985)   Seen 1258 times.
• Evaluate logarithms without using a calculator in logarithm, by ikleyn(49985)   Seen 1562 times.
• Change of Base Formula for logarithms in logarithm, by ikleyn(49985)   Seen 13254 times.
• Properties of the logarithm in logarithm, by ikleyn(49985)   Seen 21005 times.
• WHAT IS the logarithm in logarithm, by ikleyn(49985)   Seen 8952 times.
• OVERVIEW of lessons on the Method of Mathematical induction in Sequences-and-series, by ikleyn(49985)   Seen 1117 times.
• Proving inequalities by the method of Mathematical Induction in Sequences-and-series, by ikleyn(49985)   Seen 18749 times.
• Mathematical induction for sequences other than arithmetic or geometric in Sequences-and-series, by ikleyn(49985)   Seen 5776 times.
• Mathematical induction and geometric progressions in Sequences-and-series, by ikleyn(49985)   Seen 11750 times.
• Mathematical induction and arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 14537 times.
• OVERVIEW of lessons on geometric progressions in Sequences-and-series, by ikleyn(49985)   Seen 2903 times.
• Miscellaneous problems on retirement plans in Sequences-and-series, by ikleyn(49985)   Seen 2447 times.
• Withdrawing a certain amount of money periodically from a compounded saving account in Sequences-and-series, by ikleyn(49985)   Seen 1334 times.
• Finding present value of an annuity, or an equivalent amount in today's dollars in Sequences-and-series, by ikleyn(49985)   Seen 718 times.
• Solved problems on Ordinary Annuity saving plans in Sequences-and-series, by ikleyn(49985)   Seen 3136 times.
• Annuity Due saving plans and geometric progressions in Sequences-and-series, by ikleyn(49985)   Seen 5983 times.
• Ordinary Annuity saving plans and geometric progressions in Sequences-and-series, by ikleyn(49985)   Seen 4978 times.
• Entertainment problems on geometric progressions in Sequences-and-series, by ikleyn(49985)   Seen 848 times.
• Fresh, sweet and crispy problem on arithmetic and geometric progressions in Sequences-and-series, by ikleyn(49985)   Seen 1411 times.
• One characteristic property of geometric progressions in Sequences-and-series, by ikleyn(49985)   Seen 4606 times.
• Word problems on geometric progressions in Sequences-and-series, by ikleyn(49985)   Seen 12359 times.
• Solved problems on geometric progressions in Sequences-and-series, by ikleyn(49985)   Seen 2295 times.
• Problems on geometric progressions in Sequences-and-series, by ikleyn(49985)   Seen 25620 times.
• The proofs of the formulas for geometric progressions in Sequences-and-series, by ikleyn(49985)   Seen 3527 times.
• Geometric progressions in Sequences-and-series, by ikleyn(49985)   Seen 12922 times.
• OVERVIEW of lessons on arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 3719 times.
• Entertainment problems on arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 519 times.
• Problems on arithmetic progressions solved MENTALLY in Sequences-and-series, by ikleyn(49985)   Seen 742 times.
• Math Olympiad level problems on arithmetic progression in Sequences-and-series, by ikleyn(49985)   Seen 3545 times.
• Interior angles of a polygon and Arithmetic progression in Sequences-and-series, by ikleyn(49985)   Seen 793 times.
• Advanced problems on arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 1126 times.
• Inserting arithmetic means between given numbers in Sequences-and-series, by ikleyn(49985)   Seen 564 times.
• Finding number of terms of an arithmetic progression in Sequences-and-series, by ikleyn(49985)   Seen 740 times.
• Calculating partial sums of arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 765 times.
• Solved problems on arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 2712 times.
• One characteristic property of arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 5768 times.
• Increments of a quadratic function form an arithmetic progression in Sequences-and-series, by ikleyn(49985)   Seen 4248 times.
• Uniformly accelerated motions and arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 4642 times.
• Free fall and arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 7003 times.
• Chocolate bars and arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 7677 times.
• Word problems on arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 49225 times.
• Problems on arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 30013 times.
• The proofs of the formulas for arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 19388 times.
• Arithmetic progressions in Sequences-and-series, by ikleyn(49985)   Seen 32479 times.
• OVERVIEW of lessons on Miscellaneous adavanced Geometry problems in Geometry_Word_Problems, by ikleyn(49985)   Seen 1231 times.
• Nice entertainment Geometry problems in Geometry_Word_Problems, by ikleyn(49985)   Seen 829 times.
• Triangle Inequality Theorem in Triangles, by math_tutor2020(3057)   Seen 178 times.
• OVERVIEW of lessons on percentage problems in Percentage-and-ratio-word-problems, by ikleyn(49985)   Seen 4636 times.
• Business-related entertainment problem on percentage in Percentage-and-ratio-word-problems, by ikleyn(49985)   Seen 1315 times.
• Buying price, selling price and profit percentage problems in Percentage-and-ratio-word-problems, by ikleyn(49985)   Seen 1690 times.
• Compounded interest percentage problems in percentage, by ikleyn(49985)   Seen 3863 times.
• Simple interest percentage problems in percentage, by ikleyn(49985)   Seen 3340 times.
• Problems on percentage that lead to unexpected results in Percentage-and-ratio-word-problems, by ikleyn(49985)   Seen 3891 times.
• Percentage problems on chains of discounts in percentage, by ikleyn(49985)   Seen 1917 times.
• Advanced problems on percentage in Percentage-and-ratio-word-problems, by ikleyn(49985)   Seen 3949 times.
• More complicated percentage problems in Percentage-and-ratio-word-problems, by ikleyn(49985)   Seen 6127 times.
• Simple percentage problems in Percentage-and-ratio-word-problems, by ikleyn(49985)   Seen 2608 times.
• Percentage word problems (Type 3 problems, Finding the Base) in Percentage-and-ratio-word-problems, by ikleyn(49985)   Seen 141279 times.
• Percentage word problems (Type 2 problems, Finding the Rate) in Percentage-and-ratio-word-problems, by ikleyn(49985)   Seen 46702 times.
• Percentage word problems (Type 1 problems, Finding the Part) in Percentage-and-ratio-word-problems, by ikleyn(49985)   Seen 39144 times.
• Percentage problems in percentage, by ikleyn(49985)   Seen 42735 times.
• OVERVIEW of additional lessons on Travel and Distance in Travel_Word_Problems, by ikleyn(49985)   Seen 872 times.
• Upper league Travel and Distance problems in Travel_Word_Problems, by ikleyn(49985)   Seen 201 times.
• Olympiad level problems on Travel and Distance in Travel_Word_Problems, by ikleyn(49985)   Seen 214 times.
• Advanced Travel and Distance problems for bodies traveling toward each other in Travel_Word_Problems, by ikleyn(49985)   Seen 205 times.
• Moving escalator problems in Travel_Word_Problems, by ikleyn(49985)   Seen 978 times.
• Two ships traveling on parallel courses in a foggy day in Travel_Word_Problems, by ikleyn(49985)   Seen 1028 times.
• How the state patrol officers on a highway could detect the driver exceeded the speed limit in Travel_Word_Problems, by ikleyn(49985)   Seen 653 times.
• One unusual Upstream and Downstream Travel problem in Travel_Word_Problems, by ikleyn(49985)   Seen 576 times.
• How many mail trucks will a mail truck meet on its trip in Travel_Word_Problems, by ikleyn(49985)   Seen 1109 times.
• Miles per gallon effectiveness and moving car in Travel_Word_Problems, by ikleyn(49985)   Seen 746 times.
• One entertainment problem on Time equation in Travel_Word_Problems, by ikleyn(49985)   Seen 438 times.
• Time equation: HOW TO use, HOW TO write and HOW TO solve it in Travel_Word_Problems, by ikleyn(49985)   Seen 1105 times.
• Earthquake waves in Travel_Word_Problems, by ikleyn(49985)   Seen 983 times.
• The buses and a traveler in Travel_Word_Problems, by ikleyn(49985)   Seen 777 times.
• One very twisted Travel and Distance problem in Travel_Word_Problems, by ikleyn(49985)   Seen 548 times.
• Two cars and a train make a race in Travel_Word_Problems, by ikleyn(49985)   Seen 616 times.
• HOW TO algebreze and to solve these non-traditional Travel and Distance problems in Travel_Word_Problems, by ikleyn(49985)   Seen 1627 times.
• Short problems on Travel and Distance for quick mental solution in Travel_Word_Problems, by ikleyn(49985)   Seen 722 times.
• Unexpectedly simple solutions to standard catching up problems in Travel_Word_Problems, by ikleyn(49985)   Seen 551 times.
• Unusual catching-up problem in Travel_Word_Problems, by ikleyn(49985)   Seen 955 times.
• Two runners on a circular track in Travel_Word_Problems, by ikleyn(49985)   Seen 6658 times.
• In a 2-mile race competition in Travel_Word_Problems, by ikleyn(49985)   Seen 986 times.
• Two runners run on a quarter-mile oval track in Travel_Word_Problems, by ikleyn(49985)   Seen 626 times.
• A rabbit and a dog in Travel_Word_Problems, by ikleyn(49985)   Seen 1014 times.
• Climbing a coconut tree up and down in Travel_Word_Problems, by ikleyn(49985)   Seen 689 times.
• A child is running on a moving sidewalk in an airport in Travel_Word_Problems, by ikleyn(49985)   Seen 730 times.
• OVERVIEW of lessons on Travel and Distance in Travel_Word_Problems, by ikleyn(49985)   Seen 7798 times.
• Entertainment Travel and Distance problems in Travel_Word_Problems, by ikleyn(49985)   Seen 849 times.
• The Doppler Shift in Travel_Word_Problems, by ikleyn(49985)   Seen 1227 times.
• The distance covered by a free falling body during last second of the fall in Travel_Word_Problems, by ikleyn(49985)   Seen 4724 times.
• Non-traditional Travel and Distance problems in Travel_Word_Problems, by ikleyn(49985)   Seen 1362 times.
• A rower going on a river who missed the bottle of whiskey under a bridge in Travel_Word_Problems, by ikleyn(49985)   Seen 1354 times.
• A man crossing a bridge and a train coming from behind in Travel_Word_Problems, by ikleyn(49985)   Seen 3996 times.
• A train passing another train in Travel_Word_Problems, by ikleyn(49985)   Seen 3044 times.
• A light-rail train passing a walking person in Travel_Word_Problems, by ikleyn(49985)   Seen 1285 times.
• A train passing through a tunnel in Travel_Word_Problems, by ikleyn(49985)   Seen 4254 times.
• A train passing a platform in Travel_Word_Problems, by ikleyn(49985)   Seen 1998 times.
• A train passing a telegraph post and passing a bridge in Travel_Word_Problems, by ikleyn(49985)   Seen 1791 times.
• Problems on bodies moving on a circle in Travel_Word_Problems, by ikleyn(49985)   Seen 1671 times.
• Advanced clock problems in Travel_Word_Problems, by ikleyn(49985)   Seen 3611 times.
• Clock problems in Travel_Word_Problems, by ikleyn(49985)   Seen 15039 times.
• One more problem on calculating an average speed in Travel_Word_Problems, by ikleyn(49985)   Seen 1693 times.
• Calculating an average speed: a train going from A to B and back in Travel_Word_Problems, by ikleyn(49985)   Seen 3914 times.
• A person walking along the street and buses traveling in the same and opposite directions in Travel_Word_Problems, by ikleyn(49985)   Seen 1547 times.
• Travel problems on a messenger moving back and forth along the marching army's column in Travel_Word_Problems, by ikleyn(49985)   Seen 2940 times.
• Another unusual Travel problem (Arnold's problem on two walking old women) in Travel_Word_Problems, by ikleyn(49985)   Seen 10115 times.
• One unusual Travel problem in Travel_Word_Problems, by ikleyn(49985)   Seen 3108 times.
• How far do you live from school? in Travel_Word_Problems, by ikleyn(49985)   Seen 2485 times.
• Had a car move faster it would arrive sooner in Travel_Word_Problems, by ikleyn(49985)   Seen 2075 times.
• Selected Travel and Distance problems from the archive in Travel_Word_Problems, by ikleyn(49985)   Seen 1829 times.
• Selected problems from the archive on a plane flying with and against the wind in Travel_Word_Problems, by ikleyn(49985)   Seen 1836 times.
• Selected problems from the archive on the boat floating Upstream and Downstream in Travel_Word_Problems, by ikleyn(49985)   Seen 3726 times.
• Unpowered raft floating downstream along a river in Travel_Word_Problems, by ikleyn(49985)   Seen 2357 times.
• Wind and Current problems solvable by quadratic equations in Travel_Word_Problems, by ikleyn(49985)   Seen 17789 times.
• More problems on upstream and downstream round trips in Travel_Word_Problems, by ikleyn(49985)   Seen 4488 times.
• Wind and Current problems in Travel_Word_Problems, by ikleyn(49985)   Seen 80327 times.
• Using fractions to solve Travel problems in Numeric_Fractions, by ikleyn(49985)   Seen 4729 times.
• Typical catching up Travel and Distance problems in Travel_Word_Problems, by ikleyn(49985)   Seen 8060 times.
• Travel and Distance problems for two bodies moving in opposite directions in Travel_Word_Problems, by ikleyn(49985)   Seen 4889 times.
• Travel and Distance problems in Travel_Word_Problems, by ikleyn(49985)   Seen 54078 times.
• OVERVIEW of lessons on Permutations and Combinations in Permutations, by ikleyn(49985)   Seen 3646 times.
• Nice recreational problems of Combinatorics in Permutations, by ikleyn(49985)   Seen 906 times.
• One combinatorial Geometry problem solved using the Euler formula in Permutations, by ikleyn(49985)   Seen 379 times.
• Men and women standing in line in Permutations, by ikleyn(49985)   Seen 681 times.
• Stars and bars method for Combinatorics problems in Permutations, by ikleyn(49985)   Seen 1584 times.
• In how many ways N distinguishable objects can be distributed among n different boxes ? in Permutations, by ikleyn(49985)   Seen 1349 times.
• Derangement problems in Permutations, by ikleyn(49985)   Seen 1051 times.
• Inclusion-Exclusion principle problems in Permutations, by ikleyn(49985)   Seen 1455 times.
• Some twisted combinatorics problem in Permutations, by ikleyn(49985)   Seen 1124 times.
• Miscellaneous problems on permutations, combinations and other combinatoric entities in Permutations, by ikleyn(49985)   Seen 1177 times.
• Fundamental counting principle problems in Permutations, by ikleyn(49985)   Seen 1730 times.
• Combinatoric problems for entities other than permutations and combinations in Permutations, by ikleyn(49985)   Seen 1430 times.
• Persons sitting around a cicular table in Permutations, by ikleyn(49985)   Seen 4537 times.
• Arranging elements of sets containing indistinguishable elements in Permutations, by ikleyn(49985)   Seen 2073 times.
• Math circle level problem on Combinations in Permutations, by ikleyn(49985)   Seen 1124 times.
• Problems on Combinations with restrictions in Permutations, by ikleyn(49985)   Seen 1552 times.
• Problems on Combinations in Permutations, by ikleyn(49985)   Seen 6758 times.
• PROOF of the formula on the number of Combinations in Permutations, by ikleyn(49985)   Seen 30455 times.
• Introduction to Combinations in Permutations, by ikleyn(49985)   Seen 8872 times.
• Math circle level problem on Permutations in Permutations, by ikleyn(49985)   Seen 1304 times.
• Problems on Permutations with restrictions in Permutations, by ikleyn(49985)   Seen 1218 times.
• Special type permutations problems in Permutations, by ikleyn(49985)   Seen 1925 times.
• Simple and simplest problems on permutations in Permutations, by ikleyn(49985)   Seen 6492 times.
• PROOF of the formula on the number of Permutations in Permutations, by ikleyn(49985)   Seen 26705 times.
• Introduction to Permutations in Permutations, by ikleyn(49985)   Seen 14552 times.
• OVERVIEW of lessons on parabolas in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 3992 times.
• Practical problems from the archive related to ellipses and parabolas in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 2294 times.
• Optical property of a parabola in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 7670 times.
• Tangent lines and normal vectors to a parabola in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 8048 times.
• Parabola focal property in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 3690 times.
• Parabola definition, canonical equation, characteristic points and elements in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 9920 times.
• OVERVIEW of lessons on hyperbolas in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 3283 times.
• Identify elements of a hyperbola given by its general equation in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 1885 times.
• Transform general equation of a hyperbola to the standard form by completing the square in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 1586 times.
• General equation of a hyperbola in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 1213 times.
• Find the standard equation of a hyperbola given by its elements in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 723 times.
• Identify elements of hyperbola given by its standard equation in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 1139 times.
• Standard equation of a hyperbola in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 904 times.
• Optical property of a hyperbola in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 10549 times.
• Tangent lines and normal vectors to a hyperbola in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 5229 times.
• Hyperbola focal property in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 5011 times.
• Hyperbola definition, canonical equation, characteristic points and elements in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 5959 times.
• OVERVIEW of lessons on ellipses in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 3914 times.
• Astronomic applications in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 329 times.
• Identify elements of a circle given by its general equation in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 801 times.
• Transform general equation of a circle to the standard form by completing the squares in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 1440 times.
• General equation of a circle in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 1275 times.
• Find the standard equation of a circle in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 1349 times.
• Standard equation of a circle in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 909 times.
• Identify elements of an ellipse given by its general equation in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 1065 times.
• Transform a general equation of an ellipse to the standard form by completing the square in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 5512 times.
• General equation of an ellipse in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 1441 times.
• Find the standard equation of an ellipse given by its elements in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 1487 times.
• Identify elements of an ellipse given by its standard equation in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 2043 times.
• Standard equation of an ellipse in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 1208 times.
• Optical property of an ellipse revisited in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 3235 times.
• Optical property of an ellipse in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 8725 times.
• Tangent lines and normal vectors to an ellipse in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 24976 times.
• Tangent lines and normal vectors to a circle in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 18006 times.
• Ellipse focal property in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 7512 times.
• Ellipse definition, canonical equation, characteristic points and elements in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 9563 times.
• A circle of maximum radius tangent to and inscribed in parabola in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 125 times.
• GEOMETRY - YOUR ONLINE TEXTBOOK in Triangles, by ikleyn(49985)   Seen 7349 times.
• Find a triangle with integer side lengths and integer area in Geometry_Word_Problems, by ikleyn(49985)   Seen 124 times.
• On non-existing a solution to one trisection angle problem in Geometry_Word_Problems, by ikleyn(49985)   Seen 133 times.
• Packing bottles into a box in Geometry_Word_Problems, by ikleyn(49985)   Seen 1020 times.
• Finding pyramidal frustum volume in Geometry_Word_Problems, by ikleyn(49985)   Seen 1857 times.
• Selected problems on triangles similarity in Geometry_Word_Problems, by ikleyn(49985)   Seen 743 times.
• Determine the type of a triangle in Geometry_Word_Problems, by ikleyn(49985)   Seen 924 times.
• Finding the common/shared area of two triangles in Geometry_Word_Problems, by ikleyn(49985)   Seen 853 times.
• Advanced problems on finding area of right-angled triangles in Geometry_Word_Problems, by ikleyn(49985)   Seen 776 times.
• Solving some minimax Geometry problems in Geometry_Word_Problems, by ikleyn(49985)   Seen 348 times.
• Geometric solution to one minimax problem in Geometry_Word_Problems, by ikleyn(49985)   Seen 705 times.
• Finding the distanse from a point in 3D to a plane in Geometry_Word_Problems, by ikleyn(49985)   Seen 872 times.
• Two parallel chords in intersecting circles in Geometry_Word_Problems, by ikleyn(49985)   Seen 1201 times.
• Three circles touching externally in Geometry_Word_Problems, by ikleyn(49985)   Seen 1466 times.
• A problem on a circle toushing another circle internally in Geometry_Word_Problems, by ikleyn(49985)   Seen 1305 times.
• Two circles tangent externally and touching a given straight line in Geometry_Word_Problems, by ikleyn(49985)   Seen 837 times.
• Find the volume and the dimensions of a rectangular box if the areas of its faces are given in Geometry_Word_Problems, by ikleyn(49985)   Seen 2219 times.
• Problems on surface area of a rectangular box in Geometry_Word_Problems, by ikleyn(49985)   Seen 894 times.
• The point which minimizes the sum of distances to vertices of a given quadrilateral in Geometry_Word_Problems, by ikleyn(49985)   Seen 3167 times.
• Find the side of a square if distances are given from an interior point to 3 its vertices in Geometry_Word_Problems, by ikleyn(49985)   Seen 1142 times.
• Determine the standard form equation of the circle inscribed in a triangle in Geometry_Word_Problems, by ikleyn(49985)   Seen 745 times.
• Center of the given circle is the incenter of the given triangle in Geometry_Word_Problems, by ikleyn(49985)   Seen 915 times.
• Find the perimeter of a triangle obtained by adding uniform strip to a given triangle in Geometry_Word_Problems, by ikleyn(49985)   Seen 774 times.
• Area of a triangle obtained by cutting uniform strips from the given triangle in Geometry_Word_Problems, by ikleyn(49985)   Seen 764 times.
• Finding the hypotenuse of a right-angled triangle via its two medians in Geometry_Word_Problems, by ikleyn(49985)   Seen 779 times.
• Two unit squares sharing the same center but turned (rotated) each relative the other in Geometry_Word_Problems, by ikleyn(49985)   Seen 522 times.
• Selected problems from the archive on the area of plane shapes in Geometry_Word_Problems, by ikleyn(49985)   Seen 847 times.
• Advanced problem on squares built externally on sides of an arbitrary triangle in Geometry_Word_Problems, by ikleyn(49985)   Seen 789 times.
• Advanced problem on equilateral triangles built externally on sides of an arbitrary triangle in Geometry_Word_Problems, by ikleyn(49985)   Seen 2464 times.
• Triangle with the sides ratio 4:5:6 has the smallest angle measure half of the biggest angle in Geometry_Word_Problems, by ikleyn(49985)   Seen 5637 times.
• Find the rate of moving of the tip of a shadow in Geometry_Word_Problems, by ikleyn(49985)   Seen 100 times.
• Checking Equality in Equations, by math_tutor2020(3057)   Seen 58 times.
• Truth Tables (Logic) in Conjunction, by math_tutor2020(3057)   Seen 214 times.
• Logic Rules of Inference and Replacement in Conjunction, by math_tutor2020(3057)   Seen 89 times.
• OVERVIEW of lessons on Average, Mean and Median in Average, by ikleyn(49985)   Seen 1331 times.
• The mean and the total value problem for the International Fools' day of April, 1 in Average, by ikleyn(49985)   Seen 2083 times.
• Entertainment problems on average in Average, by ikleyn(49985)   Seen 407 times.
• Math circle level problem on average in Average, by ikleyn(49985)   Seen 231 times.
• Miscellaneous problems on average values in Average, by ikleyn(49985)   Seen 1105 times.
• Solved problems on average age in Average, by ikleyn(49985)   Seen 1130 times.
• Solved problems on average scores in Average, by ikleyn(49985)   Seen 1483 times.
• Solved problems on average scores, weight, height and temperature in Average, by ikleyn(49985)   Seen 1763 times.
• WHAT IS Median in Average, by ikleyn(49985)   Seen 22245 times.
• Difference between Arithmetic mean and Geometric mean in Average, by ikleyn(49985)   Seen 85568 times.
• WHAT IS Geometric mean in Average, by ikleyn(49985)   Seen 43116 times.
• OVERVIEW of lessons on a projectile thrown/shot/launched vertically up in Travel_Word_Problems, by ikleyn(49985)   Seen 1606 times.
• Miscellaneous problems on projectiles in Quadratic_Equations, by ikleyn(49985)   Seen 492 times.
• Problems on projectile launched at an angle to horizon in Quadratic_Equations, by ikleyn(49985)   Seen 609 times.
• Problem on a projectile thrown horizontally in Quadratic_Equations, by ikleyn(49985)   Seen 596 times.
• A tangled problem on a ball thrown upward in Travel_Word_Problems, by ikleyn(49985)   Seen 303 times.
• A soccer ball - write the height equation in vertex form in Travel_Word_Problems, by ikleyn(49985)   Seen 144 times.
• A flare is launched from a life raft vertically up in Travel_Word_Problems, by ikleyn(49985)   Seen 140 times.
• Problem on a ball thrown vertically up from the top of a tower in Travel_Word_Problems, by ikleyn(49985)   Seen 1913 times.
• Problem on an arrow shot vertically upward in Travel_Word_Problems, by ikleyn(49985)   Seen 3203 times.
• Problem on a projectile moving vertically up and down in Travel_Word_Problems, by ikleyn(49985)   Seen 2676 times.
• Introductory lesson on a projectile thrown-shot-launched vertically up in Travel_Word_Problems, by ikleyn(49985)   Seen 600 times.
• Problem on a toy rocket launched vertically up from a tall platform in Travel_Word_Problems, by ikleyn(49985)   Seen 2037 times.
• OVERVIEW of lessons on calculating trig functions and solving trig equations in Trigonometry-basics, by ikleyn(49985)   Seen 1552 times.
• Trigonometry entertainment problems in Trigonometry-basics, by ikleyn(49985)   Seen 460 times.
• Math OLYMPIAD level problems on Trigonometry in Trigonometry-basics, by ikleyn(49985)   Seen 962 times.
• Solving upper-league Trigonometry equations in Trigonometry-basics, by ikleyn(49985)   Seen 361 times.
• Word problems on Trigonometric functions in Trigonometry-basics, by ikleyn(49985)   Seen 2162 times.
• Find the height in Trigonometry-basics, by ikleyn(49985)   Seen 649 times.
• Calculating the sum 1*sin(1°) + 2*sin(2°) + 3*sin(3°) + . . . + 180*sin(180°) in Trigonometry-basics, by ikleyn(49985)   Seen 610 times.
• Proving Trigonometry identities in Trigonometry-basics, by ikleyn(49985)   Seen 1644 times.
• Non-standard Trigonometry problems in Trigonometry-basics, by ikleyn(49985)   Seen 932 times.
• Truly elegant solution to one trigonometric equation in Trigonometry-basics, by ikleyn(49985)   Seen 580 times.
• Solving twisted trigonometric equations in Trigonometry-basics, by ikleyn(49985)   Seen 502 times.
• Miscellaneous problems on solving trigonometric equations in Trigonometry-basics, by ikleyn(49985)   Seen 381 times.
• Challenging problems on trigonometric equations in Trigonometry-basics, by ikleyn(49985)   Seen 884 times.
• Solving advanced problems on trigonometric equations in Trigonometry-basics, by ikleyn(49985)   Seen 1304 times.
• Solving more complicated problems on trigonometric equations in Trigonometry-basics, by ikleyn(49985)   Seen 1428 times.
• Solving typical problems on trigonometric equations in Trigonometry-basics, by ikleyn(49985)   Seen 1044 times.
• Solving simple problems on trigonometric equations in Trigonometry-basics, by ikleyn(49985)   Seen 1391 times.
• Finding the slope of the bisector to the angle formed by two given lines in a coordinate plane in Trigonometry-basics, by ikleyn(49985)   Seen 879 times.
• Solve these trigonometry problems without using a calculator in Trigonometry-basics, by ikleyn(49985)   Seen 866 times.
• Evaluating trigonometric expressions in Trigonometry-basics, by ikleyn(49985)   Seen 1455 times.
• Advanced problems on calculating trigonometric functions of angles in Trigonometry-basics, by ikleyn(49985)   Seen 1666 times.
• Calculating trigonometric functions of angles in Trigonometry-basics, by ikleyn(49985)   Seen 2033 times.
• OVERVIEW of lessons on solving systems of two linear equations in two unknowns in Linear-systems, by ikleyn(49985)   Seen 2106 times.
• Using system of two equations to solve the problem for the day of April, 1 in Linear-systems, by ikleyn(49985)   Seen 1241 times.
• System of equations helps to solve a problem for the Thanksgiving day in Linear-systems, by ikleyn(49985)   Seen 2154 times.
• Solving word problems for 3 unknowns by reducing to equations in 2 unknowns in Linear-systems, by ikleyn(49985)   Seen 389 times.
• Solving systems of non-linear equations by reducing to linear ones in Linear-systems, by ikleyn(49985)   Seen 1158 times.
• Solving mentally word problems on two equations in two unknowns in Linear-systems, by ikleyn(49985)   Seen 1284 times.
• Sometimes one equation is enough to find two unknowns in a unique way in Linear-systems, by ikleyn(49985)   Seen 658 times.
• Non-standard problems with a tricky setup in Linear-systems, by ikleyn(49985)   Seen 515 times.
• One unusual problem to solve using system of two equations in Linear-systems, by ikleyn(49985)   Seen 1153 times.
• HOW TO algebraize and solve these problems on 2 equations in 2 unknowns in Linear-systems, by ikleyn(49985)   Seen 1401 times.
• Typical word problems on systems of 2 equations in 2 unknowns in Linear-systems, by ikleyn(49985)   Seen 1653 times.
• Exchange problems solved using systems of linear equations in Linear-systems, by ikleyn(49985)   Seen 502 times.
• A theater group made appearances in two cities in Linear-systems, by ikleyn(49985)   Seen 1468 times.
• Counting calories and grams of fat in combined food in Linear-systems, by ikleyn(49985)   Seen 1891 times.
• Roses and violets in Linear-systems, by ikleyn(49985)   Seen 1459 times.
• The Robinson family and the Sanders family each used their sprinklers last summer in Linear-systems, by ikleyn(49985)   Seen 1903 times.
• Two mechanics work on a car in Linear-systems, by ikleyn(49985)   Seen 1875 times.
• Using systems of equations to solve problems on investment in Linear-systems, by ikleyn(49985)   Seen 8894 times.
• Using systems of equations to solve standard (typical) problems on shares in Linear-systems, by ikleyn(49985)   Seen 1028 times.
• Three methods for solving standard (typical) problems on tickets in Linear-systems, by ikleyn(49985)   Seen 1419 times.
• Using systems of equations to solve problems on tickets in Linear-systems, by ikleyn(49985)   Seen 4844 times.
• Oranges and grapefruits in Linear-systems, by ikleyn(49985)   Seen 1772 times.
• Word problems that lead to a simple system of two equations in two unknowns in Linear-systems, by ikleyn(49985)   Seen 1153 times.
• Solving word problems using linear systems of two equations in two unknowns in Linear-systems, by ikleyn(49985)   Seen 71780 times.
• Useful tricks when solving systems of 2 equations in 2 unknowns by the Substitution method in Linear-systems, by ikleyn(49985)   Seen 1140 times.
• Geometric interpretation of a linear system of two equations in two unknowns in Linear-systems, by ikleyn(49985)   Seen 12481 times.
• Solution of a linear system of two equations in two unknowns using determinant in Linear-systems, by ikleyn(49985)   Seen 10760 times.
• Solution of a linear system of two equations in two unknowns by the Elimination method in Linear-systems, by ikleyn(49985)   Seen 15879 times.
• Solution of a linear system of two equations in two unknowns by the Substitution method in Linear-systems, by ikleyn(49985)   Seen 17983 times.
• OVERVIEW of lessons related to the slope of a straight line in Geometry_Word_Problems, by ikleyn(49985)   Seen 710 times.
• Equations of straight lines in 3D space in Geometry_Word_Problems, by ikleyn(49985)   Seen 143 times.
• A tricky problem on a parabola and a straight normal line in Geometry_Word_Problems, by ikleyn(49985)   Seen 163 times.
• Math Circle level problem on finding equation of a line in Geometry_Word_Problems, by ikleyn(49985)   Seen 279 times.
• Advanced problems on finding equations for straight lines in Geometry_Word_Problems, by ikleyn(49985)   Seen 569 times.
• Miscellaneous problems on finding equation of a straight line in Geometry_Word_Problems, by ikleyn(49985)   Seen 256 times.
• Finding a point in a segment [AB] between endpoints A and B in a coordinate plane in Geometry_Word_Problems, by ikleyn(49985)   Seen 283 times.
• Equation for a straight line perpendicular to a given line and passing through a given point in Geometry_Word_Problems, by ikleyn(49985)   Seen 1218 times.
• Equation for a straight line parallel to a given line and passing through a given point in Geometry_Word_Problems, by ikleyn(49985)   Seen 1047 times.
• Equation for a straight line in a coordinate plane passing through two given points in Geometry_Word_Problems, by ikleyn(49985)   Seen 993 times.
• Solving problems related to the slope of a straight line in Geometry_Word_Problems, by ikleyn(49985)   Seen 892 times.
• Equation for a straight line having a given slope and passing through a given point in Geometry_Word_Problems, by ikleyn(49985)   Seen 975 times.
• Find the slope of a straight line in a coordinate plane passing through two given points in Geometry_Word_Problems, by ikleyn(49985)   Seen 1026 times.
• OVERVIEW of lessons on inequalities and domains of functions in Inequalities, by ikleyn(49985)   Seen 1718 times.
• Entertainment problems on inequalities in Inequalities, by ikleyn(49985)   Seen 200 times.
• Math Olympiad level problem on inequalities in Inequalities, by ikleyn(49985)   Seen 664 times.
• Math circle level problems on inequalities in Inequalities, by ikleyn(49985)   Seen 837 times.
• Proving inequalities in Inequalities, by ikleyn(49985)   Seen 676 times.
• Solving word problems on inequalities in Inequalities, by ikleyn(49985)   Seen 1159 times.
• Solving systems of inequalities in two unknowns graphically in a coordinate plane in Graphs, by ikleyn(49985)   Seen 1329 times.
• Challenging problems on inequalities in Inequalities, by ikleyn(49985)   Seen 1243 times.
• Advanced problems on inequalities in Inequalities, by ikleyn(49985)   Seen 1721 times.
• Another way solving inequalities for rational functions with non-zero right side in Inequalities, by ikleyn(49985)   Seen 420 times.
• Solving inequalities for rational functions with non-zero right side in Inequalities, by ikleyn(49985)   Seen 1444 times.
• Solving inequalities for rational functions with numerator and denominator factored into a product of linear binomials in Inequalities, by ikleyn(49985)   Seen 1815 times.
• Solving inequalities for high degree polynomials factored into a product of linear binomials in Inequalities, by ikleyn(49985)   Seen 1440 times.
• Solving problems on quadratic inequalities in Inequalities, by ikleyn(49985)   Seen 2103 times.
• Prove that if a, b, and c are the sides of a triangle, then so are sqrt(a), sqrt(b), and sqrt(c) in Inequalities, by ikleyn(49985)   Seen 586 times.
• Arithmetic mean and geometric mean inequality - Geometric interpretations in Inequalities, by ikleyn(49985)   Seen 1800 times.
• Arithmetic mean and geometric mean inequality in Inequalities, by ikleyn(49985)   Seen 2103 times.
• What number is greater? Comparing magnitude of irrational numbers in Inequalities, by ikleyn(49985)   Seen 1357 times.
• Solving compound inequalities in Inequalities, by ikleyn(49985)   Seen 1590 times.
• Solving systems of linear inequalities in one unknown in Inequalities, by ikleyn(49985)   Seen 1030 times.
• Advanced problems on solving absolute value inequalities in Inequalities, by ikleyn(49985)   Seen 1262 times.
• Solving absolute value inequalities in Inequalities, by ikleyn(49985)   Seen 1270 times.
• Solving simple and simplest linear inequalities in Inequalities, by ikleyn(49985)   Seen 2151 times.
• OVERVIEW of LESSONS on determinants of 3x3-matrices and Cramer's rule for systems in 3 unknowns in Matrices-and-determiminant, by ikleyn(49985)   Seen 1861 times.
• Sometime two equations are enough to find three unknowns by an UNIQUE way in Matrices-and-determiminant, by ikleyn(49985)   Seen 333 times.
• Solving systems of non-linear equations in three unknowns using Cramer's rule in Matrices-and-determiminant, by ikleyn(49985)   Seen 4083 times.
• The tricks to solve some word problems with three and more unknowns using mental math in Matrices-and-determiminant, by ikleyn(49985)   Seen 4097 times.
• Solving word problems by reducing to systems of linear equations in three unknowns in Matrices-and-determiminant, by ikleyn(49985)   Seen 14863 times.
• Solving systems of linear equations in three unknowns using determinant (Cramer's rule) in Matrices-and-determiminant, by ikleyn(49985)   Seen 1857 times.
• HOW TO solve system of linear equations in three unknowns using determinant (Cramer's rule) in Matrices-and-determiminant, by ikleyn(49985)   Seen 2308 times.
• Co-factoring the determinant of a 3x3 matrix in Matrices-and-determiminant, by ikleyn(49985)   Seen 3319 times.
• Determinant of a 3x3 matrix in Matrices-and-determiminant, by ikleyn(49985)   Seen 2579 times.
• OVERVIEW of lessons on word problems for mixtures in Mixture_Word_Problems, by ikleyn(49985)   Seen 3833 times.
• Entertainment problems on mixtures in Mixture_Word_Problems, by ikleyn(49985)   Seen 385 times.
• Advanced problems on draining and replacing in Mixture_Word_Problems, by ikleyn(49985)   Seen 583 times.
• How much water must be evaporated in Mixture_Word_Problems, by ikleyn(49985)   Seen 758 times.
• Draining-replacing mixture problems in Mixture_Word_Problems, by ikleyn(49985)   Seen 1697 times.
• How many kilograms of sand must be added to a mixture of sand and cement in Mixture_Word_Problems, by ikleyn(49985)   Seen 325 times.
• Increasing concentration of alcohol solution by adding pure alcohol in Mixture_Word_Problems, by ikleyn(49985)   Seen 319 times.
• Increasing concentration of an acid solution by adding pure acid in Mixture_Word_Problems, by ikleyn(49985)   Seen 526 times.
• Special type mixture problems on DILUTION adding water in Mixture_Word_Problems, by ikleyn(49985)   Seen 1045 times.
• Check if you know the basics of mixtures from Science in Mixture_Word_Problems, by ikleyn(49985)   Seen 1002 times.
• Unusual word problem on mixtures in Mixture_Word_Problems, by ikleyn(49985)   Seen 1010 times.
• Advanced mixture problem for three alloys in Mixture_Word_Problems, by ikleyn(49985)   Seen 1770 times.
• Advanced mixture problems in Mixture_Word_Problems, by ikleyn(49985)   Seen 2141 times.
• Typical word problems on mixtures from the archive in Mixture_Word_Problems, by ikleyn(49985)   Seen 2243 times.
• Word problems on mixtures for alloys in Mixture_Word_Problems, by ikleyn(49985)   Seen 6766 times.
• Word problems on mixtures for dry substances like soil and sand in Mixture_Word_Problems, by ikleyn(49985)   Seen 2474 times.
• Word problems on mixtures for dry substances like candies, dried fruits in Mixture_Word_Problems, by ikleyn(49985)   Seen 4046 times.
• Word problems on mixtures for dry substances like coffee beans, nuts, cashew and peanuts in Mixture_Word_Problems, by ikleyn(49985)   Seen 7007 times.
• Word problems on mixtures for antifreeze solutions in Mixture_Word_Problems, by ikleyn(49985)   Seen 6081 times.
• Solving typical word problems on mixtures for solutions in Mixture_Word_Problems, by ikleyn(49985)   Seen 7552 times.
• More Mixture problems in Mixture_Word_Problems, by ikleyn(49985)   Seen 29505 times.
• Mixture problems in Mixture_Word_Problems, by ikleyn(49985)   Seen 53028 times.
• like terms in algebra in test, by Chuck-the-schmuck(0)   Seen 119 times.
• Advanced problems on associative property in Distributive-associative-commutative-properties, by ikleyn(49985)   Seen 182 times.
• OVERVIEW of additional lessons on Miscellaneous word problems in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 1022 times.
• Math Olympiad level problem on placing books in bookcase in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 413 times.
• Math Olympiad level problem on pigeonhole principle in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 672 times.
• Math Olympiad level problem on caught fishes in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 477 times.
• Math Olympiad level problem on caves and bats in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 1760 times.
• Stars and bars method for Combinatorics problems in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 1068 times.
• Nice entertainment problems related to divisibility property in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 345 times.
• In preparation for Halloween in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 468 times.
• Wrapping a gift in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 527 times.
• Nice problems to setup them using Venn diagram in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 433 times.
• How many integer numbers in the range 1-300 are divisible by at least one of the integers 4, 6 and 15 ? in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 1024 times.
• Selected problems on counting elements in subsets of a given finite set in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 587 times.
• Page numbers on the left and right facing pages of an opened book in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 906 times.
• In the worst case in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 1406 times.
• The "pigeonhole principle" problems in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 1060 times.
• Solving integer Linear Programming problems in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 617 times.
• Solving linear minimax problem in three unknowns by the simplex method in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 903 times.
• Solving non-linear minimax problems in 3D space in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 495 times.
• Solving some linear minimax problems in 3D space in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 622 times.
• Calculus optimization problems for 3D shapes in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 2394 times.
• Calculus optimization problems for shapes in 2D plane in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 996 times.
• Prove that if a, b, and c are the sides of a triangle, then so are sqrt(a), sqrt(b) and sqrt(c) in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 544 times.
• Advanced logical problems in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 3958 times.
• What are the last two digits of the number 3^123 + 7^123 + 9^123 in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 1489 times.
• Find the last three digits of these numbers in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 538 times.
• What is the last digit of the number a^n ? in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 670 times.
• How many boys and how many girls are there in a family ? in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 614 times.
• In a jar, all but 6 are red marbles in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 1130 times.
• I do not have enough savings now in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 982 times.
• Cổng Game Sunwin in test, by sunwinclub(0)   Seen 158 times.
• OVERVIEW of lessons on dimensions and the area of rectangles and circles and their elements in Surface-area, by ikleyn(49985)   Seen 2768 times.
• Had the dimensions of a rectangle be changed . . . in Surface-area, by ikleyn(49985)   Seen 1176 times.
• Problems on a circular pool and a walkway around it in Surface-area, by ikleyn(49985)   Seen 8441 times.
• Making a box from a piece of cardboard in Surface-area, by ikleyn(49985)   Seen 1483 times.
• Cynthia Besch wants to buy a rug for a room in Surface-area, by ikleyn(49985)   Seen 786 times.
• Problems on the area and the dimensions of a rectangle surrounded by a strip in Surface-area, by ikleyn(49985)   Seen 3090 times.
• Three methods to find the dimensions of a rectangle when its area and the difference of two dimensions are given in Surface-area, by ikleyn(49985)   Seen 679 times.
• Three methods to find the dimensions of a rectangle when its perimeter and the area are given in Surface-area, by ikleyn(49985)   Seen 741 times.
• Problems on the area and the perimeter of a rectangle in Surface-area, by ikleyn(49985)   Seen 1923 times.
• OVERVIEW of lessons on solving systems of non-linear equations in two or more unknowns in Systems-of-equations, by ikleyn(49985)   Seen 2180 times.
• Solving systems of non-linear algebraic equations with symmetric functions of unknowns in Systems-of-equations, by ikleyn(49985)   Seen 1585 times.
• Solving some special systems of non-linear algebraic equations in Systems-of-equations, by ikleyn(49985)   Seen 1736 times.
• Math circle level problems on solving systems of non-linear equations in Systems-of-equations, by ikleyn(49985)   Seen 793 times.
• Geometric word problems that are solved using systems of non-linear equations in Systems-of-equations, by ikleyn(49985)   Seen 227 times.
• Some tricks to solve systems of non-linear algebraic equations in Systems-of-equations, by ikleyn(49985)   Seen 2894 times.
• Solving typical problems on systems of non-linear equations in Systems-of-equations, by ikleyn(49985)   Seen 1888 times.
• Solving systems of algebraic equations of degree 2 in Systems-of-equations, by ikleyn(49985)   Seen 15814 times.
• Solving systems of algebraic equations of degree 2 and degree 1 in Systems-of-equations, by ikleyn(49985)   Seen 6205 times.
• Solving algebraic equations of high degree in Systems-of-equations, by ikleyn(49985)   Seen 7659 times.
• Cross Product Example in Vectors, by math_tutor2020(3057)   Seen 175 times.
• OVERVIEW of lessons on solving linear equations and word problems in one unknown in Equations, by ikleyn(49985)   Seen 2028 times.
• Entertainment problems on finding three unknowns using only one equation in Equations, by ikleyn(49985)   Seen 207 times.
• Choose an unknown variable in a rational way for your problem in Equations, by ikleyn(49985)   Seen 188 times.
• Solving more complicated problems by the backward method in Equations, by ikleyn(49985)   Seen 590 times.
• Solving entertainment problems on shortage of money in Equations, by ikleyn(49985)   Seen 383 times.
• Solving problems by the backward method in Equations, by ikleyn(49985)   Seen 444 times.
• Using price equation to solve some business related problems in Equations, by ikleyn(49985)   Seen 274 times.
• Using time equation to solve some Travel and Distance problems in Equations, by ikleyn(49985)   Seen 346 times.
• HOW TO solve these simple word problems MENTALLY without using equations in Equations, by ikleyn(49985)   Seen 2186 times.
• Solving some business-related problems in Equations, by ikleyn(49985)   Seen 602 times.
• Selected word problems to solve by reducing to single linear equation in Equations, by ikleyn(49985)   Seen 576 times.
• Challenging word problems to solve using a single linear equation in Equations, by ikleyn(49985)   Seen 1235 times.
• HOW TO algebraize and solve these problems using one equation in one unknown in Equations, by ikleyn(49985)   Seen 1108 times.
• Advanced word problems to solve using a single linear equation in Equations, by ikleyn(49985)   Seen 1274 times.
• Typical investment problems in Equations, by ikleyn(49985)   Seen 327 times.
• Typical problems on buying and selling items in Equations, by ikleyn(49985)   Seen 327 times.
• Typical word problems to solve using a single linear equation in Equations, by ikleyn(49985)   Seen 1214 times.
• More complicated word problems to solve using a single linear equation in Equations, by ikleyn(49985)   Seen 1140 times.
• Simple word problems to solve using a single linear equation in Equations, by ikleyn(49985)   Seen 31019 times.
• HOW TO solve a linear equation in Equations, by ikleyn(49985)   Seen 56336 times.
• OVERVIEW of lessons on using the Rational roots theorem for solving polynomial equations of high degree in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 214 times.
• Using the Rational Roots theorem to prove that a polynomial has no roots in rational numbers in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 257 times.
• Typical problems on using the Rational Roots theorem for finding zeroes of high degree polynomials in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 225 times.
• Introductory problems on the Rational Roots theorem in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 242 times.
• OVERVIEW of lessons on Divisibility of polynomial f(x) by binomial (x-a) and the Remainder theorem in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 953 times.
• Nice_Olympiad_level_problem_on_divisibility_of_polynomials in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 586 times.
• Finding unknown coefficients of a polynomial based on some given info about its roots in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 438 times.
• Finding unknown coefficients of a polynomial having given info about its polynomial divisors in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 739 times.
• Advanced problems on the Remainder theorem in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 923 times.
• Typical problems on the Remainder theorem in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 997 times.
• Divisibility of polynomial f(x) by a binomial (x-a) and the Remainder theorem in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 11521 times.
• OVERVIEW of lessons on solving polynomial equations of high degree in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 1480 times.
• Solving palindromic equations of the degree 4 in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 1267 times.
• Advanced factoring in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 932 times.
• Solving polynomial equations of high degree by introducing a new variable in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 1258 times.
• Solving polynomial equations of high degree by factoring in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 1405 times.
• OVERVIEW of Factoring the binomials x^n-a^n and x^n+a^n in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 5689 times.
• Factoring the binomials x^n+a^n for odd degrees in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 4230 times.
• Factoring the binomials x^n-a^n in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 22889 times.
• OVERVIEW of shortcut cubic multiplication formulas in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 9738 times.
• Simplifying rational expressions with the use the shortcut multiplication formulas in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 8687 times.
• The difference of cubes formula in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 8037 times.
• The sum of cubes formula in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 14773 times.
• The cube of the difference formula in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 15560 times.
• The cube of the sum formula in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 30308 times.
• OVERVIEW of shortcut quadratic multiplication formulas in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 3406 times.
• The difference of squares formula in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 18902 times.
• The square of the difference formula in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 15510 times.
• The square of the sum formula in Polynomials-and-rational-expressions, by ikleyn(49985)   Seen 21774 times.
• Find an equation of a parabola passing through given points in Quadratic_Equations, by ikleyn(49985)   Seen 294 times.
• Using quadratic equations to find the dimensions of a rectangle in Quadratic_Equations, by ikleyn(49985)   Seen 358 times.
• Find a number using a quadratic equation in Quadratic_Equations, by ikleyn(49985)   Seen 286 times.
• OVERVIEW of lessons for word problems on finding numbers in Numbers_Word_Problems, by ikleyn(49985)   Seen 1258 times.
• Entertainment problems on finding numbers in Numbers_Word_Problems, by ikleyn(49985)   Seen 353 times.
• Digit problems - Find the number using systems of linear equations in Numbers_Word_Problems, by ikleyn(49985)   Seen 1484 times.
• Find the numbers using system of equations in Numbers_Word_Problems, by ikleyn(49985)   Seen 1241 times.
• Find the number using quadratic equation in Numbers_Word_Problems, by ikleyn(49985)   Seen 1225 times.
• Find the number using a single linear equation in Numbers_Word_Problems, by ikleyn(49985)   Seen 1321 times.
• OVERVIEW of lessons on complex numbers in Complex_Numbers, by ikleyn(49985)   Seen 3419 times.
• Determine locus of points using complex numbers in Complex_Numbers, by ikleyn(49985)   Seen 553 times.
• A curious example of an equation in complex numbers which HAS NO a solution in Complex_Numbers, by ikleyn(49985)   Seen 951 times.
• Calculating the sum 1*sin(1°) + 2*sin(2°) + 3*sin(3°) + . . . + 180*sin(180°) in Complex_Numbers, by ikleyn(49985)   Seen 2162 times.
• Proving identities using complex numbers in Complex_Numbers, by ikleyn(49985)   Seen 1182 times.
• Solved problems on de'Moivre formula in Complex_Numbers, by ikleyn(49985)   Seen 1652 times.
• Advanced problems on complex numbers in Complex_Numbers, by ikleyn(49985)   Seen 3031 times.
• Miscellaneous problems on complex numbers in Complex_Numbers, by ikleyn(49985)   Seen 1769 times.
• Solving polynomial equations in complex domain in Complex_Numbers, by ikleyn(49985)   Seen 1085 times.
• Solved problem on taking square root of complex number in Complex_Numbers, by ikleyn(49985)   Seen 1671 times.
• Solved problems on arithmetic operations on complex numbers in Complex_Numbers, by ikleyn(49985)   Seen 1257 times.
• Solved problems on taking roots of complex numbers in Complex_Numbers, by ikleyn(49985)   Seen 2004 times.
• Solution of the quadratic equation with complex coefficients on complex domain in Complex_Numbers, by ikleyn(49985)   Seen 35972 times.
• How to take a square root of a complex number in Complex_Numbers, by ikleyn(49985)   Seen 42664 times.
• Solution of the quadratic equation with real coefficients on complex domain in Complex_Numbers, by ikleyn(49985)   Seen 18402 times.
• How to take a root of a complex number in Complex_Numbers, by ikleyn(49985)   Seen 38780 times.
• Raising a complex number to an integer power in Complex_Numbers, by ikleyn(49985)   Seen 13325 times.
• Multiplication and division of complex numbers in complex plane in Complex_Numbers, by ikleyn(49985)   Seen 13908 times.
• Addition and subtraction of complex numbers in complex plane in Complex_Numbers, by ikleyn(49985)   Seen 6754 times.
• Complex plane in Complex_Numbers, by ikleyn(49985)   Seen 11043 times.
• Complex numbers and arithmetic operations on them in Complex_Numbers, by ikleyn(49985)   Seen 8769 times.
• Solving non-standard equations in complex numbers in Complex_Numbers, by ikleyn(49985)   Seen 544 times.
• Solve triangles using Law of Sines in Trigonometry-basics, by ikleyn(49985)   Seen 22971 times.
• Proof of the Law of Cosines revisited in Trigonometry-basics, by ikleyn(49985)   Seen 6905 times.
• Solve triangles using Law of Cosines in Trigonometry-basics, by ikleyn(49985)   Seen 9662 times.
• OVERVIEW of lessons on coin word problems in Word_Problems_With_Coins, by ikleyn(49985)   Seen 5861 times.
• We easily deal with four unknowns in Word_Problems_With_Coins, by ikleyn(49985)   Seen 251 times.
• Santa Claus helps solving coin problem in Word_Problems_With_Coins, by ikleyn(49985)   Seen 1638 times.
• Swapping dimes and quarters in Word_Problems_With_Coins, by ikleyn(49985)   Seen 318 times.
• Non-typical coin problems in Word_Problems_With_Coins, by ikleyn(49985)   Seen 1116 times.
• Solving coin problems mentally by grouping without using equations in Word_Problems_With_Coins, by ikleyn(49985)   Seen 1944 times.
• Advanced coin problems in Word_Problems_With_Coins, by ikleyn(49985)   Seen 1115 times.
• More complicated coin problems in Word_Problems_With_Coins, by ikleyn(49985)   Seen 4341 times.
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• More Coin problems in Word_Problems_With_Coins, by ikleyn(49985)   Seen 12721 times.
• Coin problems in Word_Problems_With_Coins, by ikleyn(49985)   Seen 69792 times.
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• Miscellaneous Trigonometry problems in Trigonometry-basics, by ikleyn(49985)   Seen 5114 times.
• Trigonometric functions of half argument - Examples in Trigonometry-basics, by ikleyn(49985)   Seen 5230 times.
• Trigonometric functions of half argument in Trigonometry-basics, by ikleyn(49985)   Seen 3712 times.
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• Trigonometric functions of multiply argument in Trigonometry-basics, by ikleyn(49985)   Seen 6356 times.
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• Finding the equation of a line given two points (standard form) in Equations, by math_tutor2020(3057)   Seen 212 times.
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• Solving advanced exponential equations in logarithm, by ikleyn(49985)   Seen 752 times.
• Solving exponential equations in logarithm, by ikleyn(49985)   Seen 9196 times.
• OVERVIEW of my lessons on fractions in Numeric_Fractions, by ikleyn(49985)   Seen 1246 times.
• Entertainment problem on fractions in Numeric_Fractions, by ikleyn(49985)   Seen 951 times.
• OVERVIEW of lessons on age problems in Age_Word_Problems, by ikleyn(49985)   Seen 4471 times.
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• Entertainment age problems in Age_Word_Problems, by ikleyn(49985)   Seen 440 times.
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• Some logic problems in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 13939 times.
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• Joint work word problem for the day of April, 1 in Rate-of-work-word-problems, by ikleyn(49985)   Seen 1786 times.
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• One unusual joint work problem in Rate-of-work-word-problems, by ikleyn(49985)   Seen 1770 times.
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• OVERVIEW of lessons on perimeter and side lengths of triangles, parallelograms and rectangles in Points-lines-and-rays, by ikleyn(49985)   Seen 1617 times.
• Solved problems on the perimeter and side lengths of a rectangle in Points-lines-and-rays, by ikleyn(49985)   Seen 3281 times.
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• Solving systems of non-linear equations in two unknowns using the Cramer's rule in Matrices-and-determiminant, by ikleyn(49985)   Seen 2826 times.
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• OVERVIEW of LESSONS on solving systems of linear equations in three unknowns by the Substitution and Elimination methods in Matrices-and-determiminant, by ikleyn(49985)   Seen 798 times.
• BRIEFLY on solving systems of linear equations in 3 unknowns by the Elimination method in Matrices-and-determiminant, by ikleyn(49985)   Seen 1311 times.
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• BRIEFLY on solving systems of linear equations in 3 unknowns by the Substitution method in Matrices-and-determiminant, by ikleyn(49985)   Seen 1495 times.
• Solving systems of linear equations in 3 unknowns by the Substitution method in Matrices-and-determiminant, by ikleyn(49985)   Seen 5114 times.
• OVERVIEW of LESSONS on determinants of 2x2-matrices and Cramer's rule for systems in 2 unknowns in Matrices-and-determiminant, by ikleyn(49985)   Seen 2228 times.
• Determinant of a 2x2-matrix and the area of a parallelogram and a triangle in Matrices-and-determiminant, by ikleyn(49985)   Seen 8283 times.
• Solving word problems by the Cramer's rule after reducing them to systems of linear equations in two unknowns in Matrices-and-determiminant, by ikleyn(49985)   Seen 15199 times.
• Solving systems of linear equations in two unknowns using the Cramer's rule in Matrices-and-determiminant, by ikleyn(49985)   Seen 2129 times.
• HOW TO solve system of linear equations in two unknowns using determinant (Cramer's rule) in Matrices-and-determiminant, by ikleyn(49985)   Seen 3881 times.
• Determinant of a 2x2-matrix in Matrices-and-determiminant, by ikleyn(49985)   Seen 3341 times.
• What is a Matrix? in Matrices-and-determiminant, by ikleyn(49985)   Seen 1799 times.
• Solving advanced arithmetic word problems by reasoning in Equations, by ikleyn(49985)   Seen 339 times.
• OVERVIEW of lessons on Binomial Expansion, Binomial coefficients and the Pascal's triangle in Permutations, by ikleyn(49985)   Seen 1580 times.
• Math circle level problem on binomial coefficients in Permutations, by ikleyn(49985)   Seen 740 times.
• Solving equations that include binomial coefficients and numbers of permutations in Permutations, by ikleyn(49985)   Seen 916 times.
• Solved problems on binomial coefficients in Permutations, by ikleyn(49985)   Seen 1764 times.
• The Pascal's triangle in Permutations, by ikleyn(49985)   Seen 7000 times.
• Remarkable identities for Binomial Coefficients in Permutations, by ikleyn(49985)   Seen 4517 times.
• Binomial Theorem, Binomial Formula, Binomial Coefficients and Binomial Expansion in Permutations, by ikleyn(49985)   Seen 9565 times.
• Advanced problems on ratios in Numeric_Fractions, by ikleyn(49985)   Seen 2036 times.
• Calculations with fractions in Numeric_Fractions, by ikleyn(49985)   Seen 3297 times.
• Using fractions to solve word problems in Numeric_Fractions, by ikleyn(49985)   Seen 51444 times.
• OVERWIEW of lessons on deriving equations for locuses of points in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 426 times.
• Derive an equation and show that the locus of points is a circle in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 379 times.
• Derive an equation and show that the locus of points is a parabola in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 452 times.
• Derive an equation and show that the locus of points is a hyperbola in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 339 times.
• Derive an equation and show that the locus of points is an ellipse in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 338 times.
• Derive an equation and show that the locus of points is a straight line in Quadratic-relations-and-conic-sections, by ikleyn(49985)   Seen 369 times.
• Two chords in a circle are congruent if and only if they are equally remoted from the center in Geometry_Word_Problems, by ikleyn(49985)   Seen 545 times.
• OVERVIEW of solved problems on angles of triangles, parallelograms, quadrilaterals and polygons in Points-lines-and-rays, by ikleyn(49985)   Seen 2429 times.
• Solved problems on angles of a regular polygon in Points-lines-and-rays, by ikleyn(49985)   Seen 2500 times.
• Solved problems on missed angle of a polygon in Points-lines-and-rays, by ikleyn(49985)   Seen 1430 times.
• Solved problems on angles of a polygon in Points-lines-and-rays, by ikleyn(49985)   Seen 1595 times.
• Solved problems on angles of a quadrilateral in Points-lines-and-rays, by ikleyn(49985)   Seen 1559 times.
• Solved problems on angles of a parallelogram in Points-lines-and-rays, by ikleyn(49985)   Seen 4268 times.
• Solved problems on angles of a triangle in Points-lines-and-rays, by ikleyn(49985)   Seen 1547 times.
• Solved problems on supplementary and complementary angles in Points-lines-and-rays, by ikleyn(49985)   Seen 1722 times.
• OVERIEW of lessons on Angles Basics, Supplementary and Complementary angles, Vertical angles, Parallel lines in Angles, by ikleyn(49985)   Seen 3136 times.
• HOW TO solve problems on parallel lines - Examples in Geometry_Word_Problems, by ikleyn(49985)   Seen 11147 times.
• HOW TO solve problems on supplementary, complementary or vertical angles - Examples in Geometry_Word_Problems, by ikleyn(49985)   Seen 46188 times.
• Parallel lines in Angles, by ikleyn(49985)   Seen 24265 times.
• Vertical angles_ in Angles, by ikleyn(49985)   Seen 4821 times.
• Angles basics in Angles, by ikleyn(49985)   Seen 16602 times.
• Z-SCORE OR T-SCORE in Central-limit-theorem, by Theo(13133)   Seen 268 times.
• OVERVIEW of my additional lessons on Probability in Probability-and-statistics, by ikleyn(49985)   Seen 1232 times.
• Entertainment probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 506 times.
• Twisted probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 1049 times.
• Classic problems of Elementary Geometric Probability theory in Probability-and-statistics, by ikleyn(49985)   Seen 1131 times.
• Problems on uniformly distributed random variables in Probability-and-statistics, by ikleyn(49985)   Seen 614 times.
• Math expectation of winning in games with rolling pair of dice in Probability-and-statistics, by ikleyn(49985)   Seen 1414 times.
• Math expectation of winning in lottery problems in Probability-and-statistics, by ikleyn(49985)   Seen 1593 times.
• Math expectation of winning in games problems in Probability-and-statistics, by ikleyn(49985)   Seen 1104 times.
• Analyzing chains of random events in Probability-and-statistics, by ikleyn(49985)   Seen 1024 times.
• The chances to be rescued from an inhabitant island in Probability-and-statistics, by ikleyn(49985)   Seen 470 times.
• Miscellaneous problems on Probability in Probability-and-statistics, by ikleyn(49985)   Seen 1004 times.
• Twisted probability problems on intersections and unions of sets of events in Probability-and-statistics, by ikleyn(49985)   Seen 832 times.
• Using general probability formulas for a union or intersection of events in Probability-and-statistics, by ikleyn(49985)   Seen 1530 times.
• Challenging problems on Binomial distribution probability in Probability-and-statistics, by ikleyn(49985)   Seen 1487 times.
• Solving problems on Binomial distribution with Technology (using online solver) in Probability-and-statistics, by ikleyn(49985)   Seen 1252 times.
• Solving problems on Binomial distribution with Technology (using MS Excel) in Probability-and-statistics, by ikleyn(49985)   Seen 1518 times.
• How to calculate Binomial probabilities with Technology (using MS Excel) in Probability-and-statistics, by ikleyn(49985)   Seen 1908 times.
• Typical binomial distribution probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 1370 times.
• Simple and simplest probability problems on Binomial distribution in Probability-and-statistics, by ikleyn(49985)   Seen 2374 times.
• Elementary operations on sets help solving Probability problems - REVISITED in Probability-and-statistics, by ikleyn(49985)   Seen 574 times.
• Dependent and independent events REVISITED in Probability-and-statistics, by ikleyn(49985)   Seen 1181 times.
• More problems on Conditional probability in Probability-and-statistics, by ikleyn(49985)   Seen 855 times.
• Conditional probability problems REVISITED in Probability-and-statistics, by ikleyn(49985)   Seen 1491 times.
• Elementary Probability problems related to combinations REVISITED in Probability-and-statistics, by ikleyn(49985)   Seen 953 times.
• Solving probability problems using complementary probability REVISITED in Probability-and-statistics, by ikleyn(49985)   Seen 785 times.
• Sample space conception problems REVISITED in Probability-and-statistics, by ikleyn(49985)   Seen 1080 times.
• Stewart's Theorem in Triangles, by CubeyThePenguin(3113)   Seen 911 times.
• Prove that the number (cube root of 2 PLUS cube root of 4) is irrational in Number-Line, by ikleyn(49985)   Seen 379 times.
• HOW TO PLOT transformed functions in Coordinate-system, by ikleyn(49985)   Seen 377 times.
• Proving irrationality of some real numbers in Number-Line, by ikleyn(49985)   Seen 2994 times.
• Number Line in Number-Line, by ikleyn(49985)   Seen 1973 times.
• SUMMARY OF TIME VALUE OF MONEY FINANCIAL FORMULAS in Finance, by Theo(13133)   Seen 6735 times.
• Lesson 2 in test, by Youria(0)   Seen 253 times.
• Lesson Number1 in test, by Youria(0)   Seen 257 times.
• Introduction to Roman Numerals in Roman-numerals, by CoolRekt(53)   Seen 471 times.
• Domain of a function which is the square root of a rational function in Functions, by ikleyn(49985)   Seen 1574 times.
• Domain of a function which is a high degree polynomial under the square root operator in Functions, by ikleyn(49985)   Seen 1266 times.
• Domain of a function which is a quadratic polynomial under the square root operator in Functions, by ikleyn(49985)   Seen 2387 times.
• OVERVIEW of lessons on Probability in Probability-and-statistics, by ikleyn(49985)   Seen 3346 times.
• Probability problem for the Day of April, 1 in Probability-and-statistics, by ikleyn(49985)   Seen 1286 times.
• Unusual probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 1084 times.
• Independent and mutually exclusive events in Probability-and-statistics, by ikleyn(49985)   Seen 1479 times.
• Elementary operations on sets help solving Probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 1906 times.
• A diplomat and spies in Probability-and-statistics, by ikleyn(49985)   Seen 1270 times.
• Ten pairs of shoes are kept in a rack in Probability-and-statistics, by ikleyn(49985)   Seen 619 times.
• Rolling a pair of fair dice in Probability-and-statistics, by ikleyn(49985)   Seen 3324 times.
• Experimental probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 682 times.
• Selected probability problems from the archive in Probability-and-statistics, by ikleyn(49985)   Seen 1367 times.
• Challenging probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 1531 times.
• Advanced probability problems from the archive in Probability-and-statistics, by ikleyn(49985)   Seen 2276 times.
• Geometric probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 1814 times.
• Typical probability problems from the archive in Probability-and-statistics, by ikleyn(49985)   Seen 1200 times.
• Using sample space to solve Probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 1082 times.
• Conditional probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 2285 times.
• Probability for a computer to be damaged by viruses in Probability-and-statistics, by ikleyn(49985)   Seen 1291 times.
• Students studying foreign languages in Probability-and-statistics, by ikleyn(49985)   Seen 1182 times.
• A drawer contains a mixture of socks in Probability-and-statistics, by ikleyn(49985)   Seen 1914 times.
• People in a room write down integer numbers at random in Probability-and-statistics, by ikleyn(49985)   Seen 1967 times.
• A shipment containing fair and defective alarm clocks in Probability-and-statistics, by ikleyn(49985)   Seen 2930 times.
• Coinciding birthdays in Probability-and-statistics, by ikleyn(49985)   Seen 697 times.
• A multiple choice answers test in Probability-and-statistics, by ikleyn(49985)   Seen 1169 times.
• A True/False test in Probability-and-statistics, by ikleyn(49985)   Seen 1511 times.
• Elementary Probability problems related to combinations in Probability-and-statistics, by ikleyn(49985)   Seen 2457 times.
• Solving probability problems using complementary probability in Probability-and-statistics, by ikleyn(49985)   Seen 1455 times.
• Simple and simplest probability problems in Probability-and-statistics, by ikleyn(49985)   Seen 1578 times.
• Men and women standing in line in Miscellaneous_Word_Problems, by ikleyn(49985)   Seen 351 times.
• Grade 6 unit 8 lesson 1 in test, by 8973(0)   Seen 946 times.
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• Two chords in a circle are congruent if and only if they are equally remoted from the center in Vectors, by ikleyn(49985)   Seen 519 times.
• Using formula for the distance from a point to a straight line in a plane to solve word problems in Vectors, by ikleyn(49985)   Seen 632 times.
• HOW TO calculate the distance from a point to a straight line in a coordinate plane in Geometry_Word_Problems, by ikleyn(49985)   Seen 3868 times.
• The distance from a point to a straight line in a coordinate plane in Vectors, by ikleyn(49985)   Seen 7077 times.
• How to Big Dave in Linear-equations, by BlGDAVE(19)   Seen 1123 times.
• HOW TO solve problems on the angles of parallelograms - Examples in Geometry_Word_Problems, by ikleyn(49985)   Seen 38260 times.
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• Basic Algebra Sec 3.02 Multiplying and Dividing Fractions in Living Color by Rapalje in Polynomials-and-rational-expressions, by rapaljer(4671)   Seen 383 times.
• Basic Algebra Sec 2.14 Scientific Notation in Living Color by Rapalje in decimal-numbers, by rapaljer(4671)   Seen 787 times.
• Basic Algebra Sec 2.13 Zero and Negative Exponents in Living Color by Rapalje in Exponents, by rapaljer(4671)   Seen 805 times.
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