Tutors Answer Your Questions about Permutations (FREE)
Question 95385: I need help with this problem: There is someone who needs change for a dollar. Using nickles, dimes, &/or quarters, how many possable combonations to make a dollar are there?; I need an easier way to figue this out. BTW I am a 7th grader in Pre-AP Pre-Algebra so I'm going to bookmark this page.
Click here to see answer by scott8148(6628)   |
Question 97969: How many 5 letter code words can be formed from the letters in OUTFIELD if no letter is repeated and the last letter is a vowel? I don't know how to solve the problem and making the last letter a vowel, it's been irking me for a while. Any help will be appreciated!
Click here to see answer by stanbon(57956) |
Question 98520: How many 5 digit number exist between 10,500 and 11,000 if no digit may be repeated?
I answered 120 - 5x4x3x2x1 = 120 on a quiz and it was counted incorrect. The teacher said that the answer was 210 but did not explain what I did wrong. Help! I'm trying to study for the test now and I can't figure it out.
Click here to see answer by jim_thompson5910(28704) |
Question 99010: A license consists of 1 letter followed by 1 digit followed by 1 digit followed by 3 letters. Assuming no resrictions, which expression shows how many licenses can be issued?
A- (26)(10)(25)(24)(23)
B- (26)(10)(25)(25)(25)
C- (26)(10)(26)(25)(24)
D- (26)(10)(26)(26)(26)
Thanks in advanced for anyone that helps.
Click here to see answer by stanbon(57956) |
Question 99083: Word problem - HELP!!
You have 15 paint colors to choose from. There are only four rooms in the house that need painting - in how many ways can you choose which color paint to use??
Makes no sense - help
Thanks
Click here to see answer by Adam(64) |
Question 99374: Dont get this at all -
The variable Z varies jointly with x and y. Use the given values to write an equation relating x, y, and z. Then find Z when x = -4 and y = 7.
The equation would be z = kxy - right???
Now
x = 1, y = 1/3, z = 5
x = -6, y = 3, z = 2/5
Dont know what to do at all
HELP
Click here to see answer by stanbon(57956) |
Question 99923: The emergency room at Victory hospital employs eight male and ten female nurses. A special Triage unit of six nurses is being formed. In how many ways can this be done if:
a): The unit must have three males and three females?
b): The unit must have at least one female nurse?
Thanks...
Steve
Click here to see answer by stanbon(57956) |
Question 102827: Determine the number of six-digit integers ( no leading zeros) in which the six-digit integer is i) even with no repetitions ii) divisible by 5 no repetitions.
For the 1st one I thought the last number could only be chosen in 5 ways
then that would leave 9 numbers to choose from. 1st number can't be 0 so it can be chosen in 8 ways leaving 8 numbers as the choice for the 3rd number 7 for the 4th 6 for the 5th number. I came up with 67,200 as the answer but the book has 68,880. Where did I go wrong?
Click here to see answer by Fombitz(13828)  |
Question 103736: i'm having trouble understanding what the formula should be for this problem/statement.
Three roses are to be placed in a vase. the color choices are red,pink,white,yellow, and orange. what is the probability that 3 roses selected at random will not include red?
Click here to see answer by stanbon(57956) |
Question 103736: i'm having trouble understanding what the formula should be for this problem/statement.
Three roses are to be placed in a vase. the color choices are red,pink,white,yellow, and orange. what is the probability that 3 roses selected at random will not include red?
Click here to see answer by edjones(7569)  |
Question 104927: Employee health care plans. A new employee has a choice of 5 health care plans,3 retirement plans, and 2 different expense accounts. If a person selects one of each option, how many different options does he or she have?
Click here to see answer by Fombitz(13828) |
Question 105934: OK i need to work out the price that we were beaten by to win some jobs with a particular client.
I'll give 3 examples, and what I am after is a fixed formula so I can work out what was quoted by our opposition each time.
Example#1: We won the job, quoting $1550. The variation % is 0.00%
Example#2: We have lost this job. Our quote $590. Variation 100%, therefore I calculate the winning quote to be $295.
Example#3: Our Quote: $2145. Variation: 50% Would the winning quote be $1430?
Example#4: our quote: $2435. Variation: 35.12%
Example#5: Our quote $330. Variation: 65.0%
Can someone come up with a formula that works everytime?
Thanks Kathy
Click here to see answer by scott8148(6628) |
Question 106501: The problem is :
Five computers are to be wired in a linear network, as in the following figure;
______ ______ ______ ______ ______
(Symbolizing five computers side by side)
How many permutations of the five computers are possible?
Thanks a lot for your help!!!
Click here to see answer by checkley75(3666) |
Question 106508: The problem is:
A computer with an old processor locks up if more than 4 applications are running simultaneously. If the owner has 20 applications stored in his program file how many diferent sets of 4 can he run, so that his computer does not lock up?
Please help me. Thanks alot
Click here to see answer by stanbon(57956) |
Question 107310: Please help with the following question:
A student is to answer 10 out of 15 exam questions.
a) how many choices has he if he must answer the first 2 questions?
b) how many choices has he if he must answer the first or second question but not both of them?
c) how many choices has he if he mush answer exactly three of the first five questions?
d) how many choices has he if he must answer at least three of the first five questions?
e) how many choices of question has he without restrictions?
Thanks a lot!
Click here to see answer by blc52877(2) |
Question 108242: Simplify (5x^2y)(-4xy^2)(-x^3y^3) i would be very glad if you could answer this question it is for help on a paper we get for geometry called a CPR thank you for your help and i would appreciate an answer ASAP this CPR is due tomorrow Tuesday November 6th thank you
Click here to see answer by stanbon(57956) |
Question 112636: A. How many 10-digit phone numbers in the 972 area code have at least one repeated digit?
B. How many 7-digit phone numbers in the 972 area code have at least one 1 and at least one 3 among its digits?
Note: 0 or 1 can not be used as the first digit.
Click here to see answer by Edwin McCravy(8999)  |
Question 113745: You have a jar of red marbles and a jar of yellow marbles. You take several(any number you like) red marbles and transfer them to the yellow marble jar and mix them in. Then you randomly take the same number of marbles as you took before, but this time from the yellow(mixed)jar, and transfer them to the red jar. Which of the following is true?
a) there are now more red marbles in the yellow jar than there are yellow marbles in the red jar.
b)there are more yellow marbles in the red jar than there are red marbles in the yellow jar.
c)the number of reds in the yellow jar equals the number of yellows in the red jar.
Using either algebraic and diagram with word eexplanation, show why your choice of answers above is correct.
Click here to see answer by checkley71(8403) |
Question 114638: I am so confused with this problem about Venn Diagrams, please help me.
----
Of 73 men, 54 wore belts, 20 wore suspenders, & 4 wore both.
How many wore ONLY a belt? Only suspenders? Niether?
---
I tried adding 54, 4 and 20. I got 78 and thats over 73 men. So, i subtracted 78 and 73 and got 5. That's 5 over the number of men total and if i subtract that from both belts and suspenders i would get less people wearing them. I'm so confused, please help me with this.
Thank you so much
Click here to see answer by scott8148(6628) |
Question 115780: John Owns A HotDog Stand. His PRofit Is Represented By The Equation. P(x)= -x^2+10x+34, With P being profits and X the number of Hotdogs sold. What is the most he can earn? I think its an Inequality problem please some help me solve it
Click here to see answer by edjones(7569) |
Question 115912: How many 7-digit telephone numbers are possible if the first digit cannot be 0 and
(a) only odd digits may be used?
(b) the telephone number must be a multiple of 10 (that is, it must end in 0)
(c) the telephone number must be a multiple of 100?
(d) the first 3 digits are 481
(e) no repetitions are allowed?
Click here to see answer by checkley71(8403) |
|
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
|
