Questions on Algebra: Combinatorics and Permutations answered by real tutors!

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Question 833473: Pointing towards a person a man said to a woman"His mother is the only daughter of your father."How is the woman related to that person?
Click here to see answer by KMST(5328)

Question 833470: There were 3/5 as many men as women at a seminar. There were 48 fewer men then women. What was the total number of mem and women at the seminar?
Click here to see answer by JulietG(1812)

Question 833431: How many different 10-letter words (real or imaginary) can be formed from the following letters?
U,C,C,T,E,A,C,P,J,K
Click here to see answer by JulietG(1812)

Question 834080: At a buffet you have a choice of 10 main dishes 5 sides 3 vegetables and a desert how many possible meals can you have ?
Click here to see answer by richwmiller(17219)

Question 834159: How many zeroes in behind 127!

Click here to see answer by KMST(5328)

Question 834030: In how many ways can you arrange 3 letters of the alphabet
Click here to see answer by Fombitz(32388)

Question 834040: In how many ways can you arrange 3 numbers on a license plate?
Click here to see answer by Fombitz(32388)

Question 834657: a box of pencils can be divided equally among 2,3,4,or 5 children with no pencils left. What is the smallest number of pencils that the box can hold?

Click here to see answer by ankor@dixie-net.com(22740)

Question 834980: how many triangles can be obtained by joining 12 points, five of which are collinear ?
Click here to see answer by Edwin McCravy(20054)

Question 835810: I need your to solve these problem:
1. X/2-8=7
2. 2/3x-6=11
3. 0.2(x+3)+3=.05x
4. 1/2(2x-4)=3/4(4x+16)
What are the formula?
Click here to see answer by Fombitz(32388)

Question 835852: Regular polygon has 20 sides. How many triangles can be formed using these vertices but,not using the sides?
Ans.800
Click here to see answer by richard1234(7193)

Question 836002: Ploy is trying to figure out how to arrange her shoe collection. She has 8 pairs of black shoes, how many different ways can she arrange them using permutation theory?
Click here to see answer by jim_thompson5910(35256)

Question 836115: if 5 digits number
is formed using odd digits without
repetition,what is the sum of the all
possible number? .
Click here to see answer by KMST(5328)

Question 836139: how many different 4 didgit combinations r there for 0-9 an what r they

Click here to see answer by richard1234(7193)

Question 836219: Standard deck of cards, probability, in a reduced fraction, of dealing yourself 3 eights?
Click here to see answer by Fombitz(32388)

Question 836251: A student in your classroom claims that he does not need to define permutations because he knows the Fundamental Counting Principle. As the teacher, how do you respond?
Click here to see answer by richard1234(7193)

Question 836193: kelly can select one or more of the following 4 toppings to put on his hamburger: cheese, onions, pickles, and tomatoes. if he selects one or more, how many different combinations of toppings can he have?
Click here to see answer by richard1234(7193)

Question 836538: If there are 27 kids in the class, I need 9 groups of 3, for 12 weeks with no repeated students or groups?
Click here to see answer by richwmiller(17219)

Question 837268: You have 12 different t shirts. You wear one each day for 5 days. How many ways can this be done?
Click here to see answer by richwmiller(17219)

Question 837677: A family has 12 members. In how many ways can six family members be seated in a row so that their ages increase from left to right?
Click here to see answer by Theo(13342)

Question 837706: 1/7th of passenger of a train are children..3/5 of passenger were gents and rest ladies..if number of ladies was 360..find total number of passenger in the train
Click here to see answer by Theo(13342)

Question 838197: In how many ways can 13 people line up in a row if the smallest has to be first and the largest is the last?
Click here to see answer by Fombitz(32388)

Question 838133: how many 3 digit integers greater than 499 have exactly two repeated digits
Click here to see answer by LinnW(1048)

Question 838133: how many 3 digit integers greater than 499 have exactly two repeated digits
Click here to see answer by richard1234(7193)

Question 838417: Three people run for class president, 4 for Vice President, and 2 for secretary. How many ways can the 3 officers be selected?
Click here to see answer by edjones(8007)

Question 838424: How many two-person committees can be formed from a group of six people
Click here to see answer by edjones(8007)

Question 838438: when the base of a ladder that had been resting flat against the wall is pulled out 4 meters the top of the ladder descends 1/5 the length of the ladder. What is the length of the ladder?
Click here to see answer by edjones(8007)

Question 838410: A security system consists of four digits password. The first two digits must be
numbers(0 to 9) and the last two digits must be letters. How many different
passwords are available if the first digit can not be 0 or 1 and the last digit can
not be x,y,z?
Click here to see answer by edjones(8007)

Question 838085: How many different 5 digit vehicle number plates can be made if the first digit must not be a 9 and no digits can be repeated?
Click here to see answer by Fombitz(32388)

Question 838439: my license tag is a 3 digit number.the product of the digit is 216. their sum is 19 and the digits of here and ascending order find the license plate number
Click here to see answer by Edwin McCravy(20054)

Question 837915: Find the total number of 4 letter words which have a
vowel only as the first and the last letter.
Click here to see answer by Edwin McCravy(20054)

Question 839017: There Are 10 points in a plane out of which 3 are collinear . Find the number of straight line and triangles ?? :) thank you .
Click here to see answer by psbhowmick(878)

Question 839045: You have to answer essay questions for an exam. There are essays to choose from. How many different groups of essays could you possibly choose?
Click here to see answer by Fombitz(32388)

Question 839205: In how many ways can you arrange 4 boys and 4 girls in a row of 8 seats if one boy and a girl will insist not to be seated together .
//please help me !
Click here to see answer by josmiceli(19441)

Question 839276: How many seven-symbol computer passwords can be formed using the letters A to J and the digits 2 to 7?
Is the Formula
10 for letters
and 5
10*10*10*10*10

Click here to see answer by Alan3354(69443)

Question 839331: You have 2 science books, 3 language books, and 4 philosophy books. In how many ways can they be arranged on the shelf if all books of the same subject are to be together?
Would be 2!
3! and 4!
2*1*3*2*1*4*3*2*1
Click here to see answer by ewatrrr(24785)

Question 839511: How many different 4-Digit numbers can be formed from digits 1-4 if the digits can repeat? if they cant?
Click here to see answer by swincher4391(1107)

Question 840117: A student may answer any 2 if 7 questions. In how many ways can she make a choice?
Click here to see answer by stanbon(75887)

Question 840115: arrange 10 people in a line so that 8 particular people are never together.
total no of ways : 10!
8 are always together: 8!
So is it 10!-8! ??????
Click here to see answer by stanbon(75887)

Question 840238: One day, only 47 students came to practice . There were 5 students marching in the first row. How could the rest of the students be arranged to make equal rows? Explain.

Click here to see answer by Fombitz(32388)

Question 839758: How many ways can a team of 5 students be selected from a group of 9?

Click here to see answer by richard1234(7193)

Question 840075: student has 6 questions. student can score 0, 1, 2, or 3 per question. how many ways can student get 15?
Click here to see answer by Edwin McCravy(20054)

Question 840551: How many ways are there to choose a committee of 7 people from a group of 10 people?
Click here to see answer by stanbon(75887)

Question 840551: How many ways are there to choose a committee of 7 people from a group of 10 people?
Click here to see answer by thejackal(72)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035