Thursday

October 23, 2014

October 23, 2014

Number of results: 31,897

**Math: Permutations and Combinations**

Need a verification: Combinations of n items taken r at a time: C9n,r)= n!/(n-r)!*r! C(8,0) 8!/(8-0)!*(0)! = 8!/8!*0! = 0 or Answer is 0 or 1?
*August 28, 2009 by Dee*

**Finite Math**

Please help with this problem. In a student writing contest with 25 entries, 3 essays are selected for first, second, and third place awards and 5 are selected for honorable mention. How many ways can this be done? Thanks. Ok Gen, for the first place there are 25 choices, for ...
*July 25, 2006 by Gen*

**Math**

Find the probability that if the letters of the word "parallel" are randomly arranged that the L's will not be together. In class, I'm studying permutations and combinations. The solutions stated the no. of permutations where 3 L's are together is 6!/2!. Could you please ...
*October 11, 2012 by Candice*

**algebra 2 (permutations & combinations)**

from a standard deck of 52 cards, how many different five-card hands can be drawn?
*April 10, 2013 by grace*

**Math**

For the three-letter set {R, S, T}, find the two-letter combinations. I realize that this deals with combinations and not permutations. I just do not understand how they want this done.
*May 8, 2010 by BWB*

**Math**

We are working on permutations and combinations and the problem reads as follows: A deli offers its cheese sandwich with various combinations of mayonnaise, lettuce, tomatoes, pickles, and sprouts. 5 types of cheese are available. How many different cheese sandwiches are ...
*February 12, 2010 by nicole*

**math ,correction**

Is this correct? consider determining how many possible phone numbers are in an area code (repeated numbers allowed) Is this a combination, a permutation, or neither? I think it would be a combination wouldn't it? Since there are ten number possibilities in each of the three ...
*July 13, 2007 by student*

**Algebra help PLEASE? **

Create two different situations: one in which you use combinations and one in which you use permutations. Include specific details and an explanation about what makes each situation either a combination or permutation.
*April 14, 2014 by Aniston*

**college math**

Explain permutations and combinations and the differences between the two. Use examples to illustrate.
*December 7, 2007 by Rose*

**permutations and combinations**

Four men and four women are to be seated alternatively at a round table. In how many ways can this be done?
*January 2, 2006 by bb*

**Permutations/Combinations**

In how many ways can 5 men and 5 women be seated at a round table if two men must not sit together?
*February 27, 2011 by Newbie*

**math permutations**

how many distinguishable permutations are there of the letters in the word effective
*January 28, 2013 by mary*

**statistics permutations and combinations**

Selecting a committee: There are 7 women and 5 men in a department. How many ways can a committee of 4 be selected if there must be at least 2 women?
*November 15, 2011 by Celee *

**Math**

Create two different situations: one in which you use combinations and one in which you use permutations. Include specific details and an explanation about what makes each situation either a combination or permutation.
*April 16, 2013 by Katie*

**MATH VERY URRRGENT!!!!!!!!!!!!!**

Create two different situations: one in which you use combinations and one in which you use permutations. Include specific details and an explanation about what makes each situation either a combination or permutation.
*April 8, 2014 by Connexus*

**Chemistry**

Sorry for posting this again, I dont know if the question was skipped or not, but I was just wondering if I could get some help on this... thanks. There are 3 known isotopes of Hydrogen and 3 stable isotopes of oxygen. How many types of water molecules would these produce? ...
*April 21, 2007 by Jessica*

**Math**

Teng is designing a house and in each room he can choose from tiles, floorboards, or carpet for the floor. a. How many combinations of flooring materials are possible if her designs a 2 room studio? b. How many combinations are possible for a 3 room apartment? c. How many ...
*December 8, 2013 by Michelle *

**Statistics**

3 students will represent your school at a conference at the state capital. A drawing will be held to select the 3 representatives from a group of 5 finalsts. If you and your friend are both finalists, what are the chances that both of your names will be drawn? Is it 2 out of ...
*March 28, 2007 by Tony*

**Math**

In a mathematics olympiad there are 20 finalists. In how many ways can three equal prizes be awarded, assuming that two prizes cannot be given to one finalist? In how many ways can a first, second and a third place be awarded? (I understand that Permutations and Combinations ...
*January 17, 2011 by Jen*

**Permutations**

What is the number of permutations for the words: QUEUE COMMITTEE PROPOSITION BASEBALL You can arrange it in any order. You can also arrange it into any order of the letters. You could use the math from FACTORIAL. I need an answer ASAP!!!
*April 10, 2014 by dddd47906 *

**Data Management**

List all permutations of the elements of the set {+, -, *) List all subsets (combinations) of the elements of the set {+, -, *)
*December 20, 2006 by Raj*

**ALGEBRA**

how many permutations are there of the following word. mathematics
*November 16, 2011 by MONICA*

**Algebra 2**

Solve using linear combinations. x - 5y = 6 3x + 4y = 18 What are linear combinations?
*October 3, 2011 by Peter*

**math**

Compute: The number of combinations of 8 elements taken 3 at a time. The number of permutations of 8 elements taken 3 at at time.
*May 17, 2012 by Hannah*

**Algebra**

It's been so long since I've donw combinations, and now I have a question about them in my algebra homework packet. Question is....Marcie has a collection of 9 DVDS. She will choose 4 of them to take in the car to watch during a long trip. How many combinations of 3 DVDS can ...
*June 12, 2009 by Tiff*

**alg2/trig**

I got this question wrong on my test, and I have to correct it :/ How many permutations are there of all the letters in the word "TEXAS" ? The answer to this part is 120, but I have no idea on how to solve the second part without having to write it all down. *How many of these...
*April 1, 2009 by Chris*

**Math**

We would like to test 3 different treatments on a particular type of plant. A worker at the local greenhouse will allow us to use 3 amoung 10 plants. *Note: Each treatment will be used on one and only one plant.* a) In how many different ways can we assign the plants to the ...
*September 27, 2006 by Lindz*

**algebra**

A pack of Jillybeans contains seven different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig and Grape. You can make each flavor indivdually or come up with some crazy combinations. How many flavor combinations are possible with these seven flavors alone or mixed?
*May 22, 2011 by Matt *

**Statistics**

A raffle is being conducted with 50 tickets to be sold - one per customer. There are three prizes to be awarded. If the four organizers of the raffle each buy one ticket, what is the probability that the four organizers win: a) all of the prizes? b) exactly two of the prizes c...
*July 3, 2009 by Sean*

**math**

How many different combinations of coins can total exactly $0.40? I got 31 possible combinations
*November 15, 2010 by Jamie*

**Algebra**

I am doing the amount of permutations in the word trigonometry. For the expression, I wrote 12!/2!2!2!. I got 968003200. Is this correct? If not, should I use parenthesese? Thanks
*January 30, 2009 by Caleb*

**math2**

Mary is moving and wants photos to remember her six friends. If pictures are taken so there is a shot of every possible pair of friends- including Mary, how many pictures will be take? Would one roll of 24 exposures be enough? 27 Mary is moving and wants photos to remember her...
*January 24, 2007 by Preston*

**algebra**

i need explanation how they solved this one the answer is provided: finding the number o fdistinguishable permutations. (15!)/(4!3!612!) = 6, 306,300
*August 11, 2008 by student*

**Pre Calculus 12**

Im on the chapter of permutations/combinations/fundamental counting principle need help with 2 questions 1. emma is arranging her books in piles on her desk. she has 5 math books, 3 english books, and 4 science books. how many ways can she arrange them if she wants to keep the...
*January 18, 2013 by Shreya*

**permutations in math**

suppose 15 countries compete in an olympic event. gold, and silver,and bronze medals are awarded. how many different arrangements of winners are there if no country wins more than one medal in this event? show the work. thanks. 15 countries can get the gold 14 countries can ...
*April 9, 2007 by dillon*

**Algebra Please help**

A pack of Jellybeans contains 7 different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig, and Grape. You can Eat each flavor individually or come up with some crazy combinations. How many flavor combinations are possible with these 7 flavors alone or mixed? You can use...
*November 9, 2011 by Linda*

**math question**

I have the equation 3f+2.50h=240 and I want to make a table of values with at least five possible combinations. How do I determine which combinations I should use?
*June 1, 2008 by Calie*

**Probability (Pre-Calculus)**

A class is given a list of eight study problems from which five will be part of an upcoming exam. If a given student knows how to solve six of these problems, find the probability that the student will be able to answer: (a) all five questions on the exam. (b) exactly eight ...
*March 25, 2010 by Hailey*

**Algebra word problem**

A pack of Jellybeans contains 7 different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig, and Grape. You can Eat each flavor individually or come up with some crazy combinations. How many flavor combinations are possible with these 7 flavors alone or mixed? You can use...
*November 8, 2011 by Linda*

**Algebra word problem**

A pack of Jellybeans contains 7 different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig, and Grape. You can Eat each flavor individually or come up with some crazy combinations. How many flavor combinations are possible with these 7 flavors alone or mixed? You can use...
*December 6, 2011 by Linda*

**Pre-Algebra [Combinations]**

Need help with these- 1.How many groups of 4 fabrics can be selected from 7 fabrics? 2.The school photographer wants to photograph 3 students from a club with 14 members. How many combinations can be made? 3.Philip wishes to check 2 books out of his school library. If the ...
*June 25, 2009 by mysterychicken*

**Algebra 2**

how do you do permutations??? distinguishable ex. Sweetwater would you put the total number of the letters on top and then put what is repeated on bottom???
*April 22, 2009 by Christina*

**Math**

5e+15p</=60 How many combinations of excersises (e) and problems (p)can you do in exactly one hour(60 minutes)? I've found 5 combinations: 9e,1p 3e,3p 6e,2p 0e,4p, 12e,0p Are there anymore? What method would you use to solve this type of problem? Thanks for the help!
*February 25, 2012 by Jess*

**Math- combinations**

I need this for a story I'm writing for one of my classes: how many different number combinations can you get using 3 different spaces. (I.e, 000, 001, 002, and so on?)
*August 12, 2013 by Me*

**Algebra**

how do you solve linear combinations?
*January 6, 2008 by Mandy*

**Linear combinations**

Solving linear combinations Do you have a particular example of a problem you need help with?
*March 13, 2007 by Paris*

**Combinations**

Assume that the set S has 10 elements. How many subsets of S have at most 4 elements? This question is from the section in my book called "Counting Partitions: Combinations." I would greatly appreciate any help! Thanks!
*February 19, 2009 by Eleanor*

**Math**

I was given this by my teacher for extra credit 1 _ _ _ _ _ 1 _ the blanks are numbers from 0-9 excluding 1 since it was given. I need to know how many possible combinations are left and if there is a good website that will generate all the combinations.
*November 1, 2010 by Karl Smith*

**algebra**

use linear combinations to solve these system. 3x+2y=22 9x-8y=-4
*November 29, 2010 by aviel*

**algebra**

using the letters in the word "MAGIC,", find the number of permutations that can be formed using 3 letters at a time A. 20 , B. 30 , C. 40, D. 60
*October 26, 2011 by tracy*

**Algebra II-Please help!!**

Please help-I'm really mixed up How do I find the permutations of the first 12 letters taken 3 at a time? I have a ton of these to do and really don't understand them at all-
*April 4, 2011 by Anna*

**math**

if you have 63 diffrent combinations how many diffrent combinations can you make with 1 crust , and 3 diffrent toppings , and 1 type of cheese ?
*May 21, 2013 by isabella*

**Math**

If I have 4 people and I want to take a picture of them standing side by side, how many total different combinations can I use? If I have 5? if I have 10? Is there a mathematical equation that would figure out the total no matter how many people I start with? If person A can ...
*January 31, 2007 by K.*

**math**

I was given this by my teacher for extra credit 1 _ _ _ _ _ 1 _ the blanks are numbers from 0-9 excluding 1 since it was given. I need to know how many possible combinations are left and if there is a good website that will generate all the combinations. (The numbers in the ...
*November 2, 2010 by Karl Smith*

**algebra**

use substitution method/linear combinations to solve then tell how many solutions they have -7x+7y=7 and 2x-2y=-18
*January 30, 2011 by anna*

**math-combinations**

An executive committee of three is selected from a group of ten. Which expression best describes the number of combinations? A. 10P3 (small 10 and 3) B. 10! C. 3P10 (small 3 and 10) D. 10P3/3! (small 10 and 3 on top, big 3! on the bottom)
*March 27, 2011 by eryn*

**math,help**

what formula or how do i solve for this: How many 5-card poker hands containing of 2 aces and 3 kings are possible with an ordinary 52-card deck? (4*3*2)/3! combinations of three kings x (4*3)/2)combinations of two aces = 24.
*July 13, 2007 by student*

**physics**

Consider the Hamiltonian H=Z⊗3 acting on 3 qubits. What is the ground energy of the system? (I.e. the lowest eigenvalue of H?) What is the dimension of the ground energy subspace? (I.e. multiplicity of that eigenvalue?) Which of the following correctly describes the ...
*April 19, 2013 by s*

**chemistry**

A. Find and list all of the different half- cell combinations. Hint 15 combinations! 1. Copper/ Cu2+ 2. Lead/ Pb2+ 3. Magnesium/ Mg2+ 4. Zinc/ Zn2+ 5. Iron/Fe2+ 6. Aluminum/ Al3+ B. write the half reactions of each combination and the overall redox reaction. Please help! Thank...
*May 8, 2013 by Chloe*

**math - please help**

In a gift wrapping department, a customer can choose from x different papers, y different ribbons, and z different greeting cards. There are 160 different paper, ribbon, and greeting card combinations. List three of the possible combinations.
*February 3, 2011 by stacy*

**math//algebra**

Eye color is determined by genetic combination. Let R represent the gene for brown eyes and l represent the gene for blue eyes. Any gene combination including R results in brown eyes. Consider the offspring of a parent with a homozygous brown-eyed, RR, and a parent with a ...
*December 19, 2012 by ana URGENT*

**Algebra 1 Word Problem (Reiny)**

How am I supposed to solve this? "Sandy makes $2 profit on every cup of lemonade that she sells and $1 on every cupcake that she sells. Sandy wants to sell at least 5 cups of lemonade and at least 5 cupcakes per day. She wants to earn at least $25 per day. Show and describe ...
*January 16, 2014 by Anonymous*

**math**

how many distinguishable permutations are in the word MUSKETEERS?
*April 20, 2008 by Emily*

**math**

how many permutations are there for 4 numbers (0,2,3 and 5) adding up to 25 in 8 turns?
*February 7, 2011 by al*

**Algebra 1**

A vending machine had to be programmed to accept any combination of nickels, dimes, and quarters that totals 40 cents. How many different combinations are possible?
*October 7, 2013 by Alexandra*

**Biology**

i asking question for my sister again how r gene combina tions reshufled? my sister and i find this paragraph online but we not able to get answer. Sex can introduce new gene combinations into a population and is an important source of genetic variation. You probably know from...
*March 8, 2012 by Mohammad*

**Math**

In a gift wrapping department, a customer can choose from X different papers, Y different ribbons, and Z different greeting cards. There are 160 different paper, ribbon, and greeting card combinations possible. List three of the possible combinations.
*February 3, 2011 by Danielle*

**Algebra**

The town is organizing a Fourth of July parade. There will be two sizes of floats in the parade (30 ft and 15 ft). A space of 10 ft will be left after each float. A. The parade must be at least 150 ft long, but less than 200 ft long. What combinations of large and small floats...
*January 13, 2014 by Anonymous*

**math**

what is the number of distinguishable permutations of the word hippopotamus?
*October 18, 2008 by kendal*

**math**

In a gift wrapping department, a customer can choose from x different papers, y different ribbons, and z different greeting cards. There are 160 different paper, ribbon, and greeting card combinations possible. List three of the possible combinations. Need help...please.
*February 2, 2011 by Brittany*

**Algebra 1 Word Problem (Reiny)**

How am I supposed to solve and construct a graph for this problem? 1. Sandy makes $2 profit on every cup of lemonade that she sells and $1 on every cupcake that she sells. Sandy wants to sell at least 5 cups of lemonade and at least 5 cupcakes per day. She wants to earn at ...
*January 17, 2014 by Anonymous*

**math (combinations)**

The Hamburger Depot offers burgers fixed 5 different ways. They also offer French fries, tater tots, onion rings, and cheese sticks as side orders. How many different combinations of one hamburger and one side could be offered?: *
*September 22, 2007 by --*

**math**

Kristen and Christopher were playing a board game. They used a spinner with 4 spaces labeled 1, 2, 3, and 4. Each player was allowed 3 consecutive spins. They could move pieces on a board game only if the total of the 3 spins equaled 5. How many possible combinations could ...
*September 29, 2014 by Anonymous*

**Algebra HELP**

USE LINEAR COMBINATIONS TO SOLVE THE SYSTEM OF LINEAR EQUATIONS (please show steps) 1) -X+8Y=16 2) 4X+5Y=-2 3)4Y=15-3X 3X+4Y=36 5X-4Y=-23 2Y=3X+21
*December 13, 2007 by electra*

**math**

In gift wrapping department, a customer can choose from x different papers, y different ribbons, and z different greeting cards. There are 160 different paper, ribbon, and greeting card combinations possible. List three of the possible combinations. What forumula are used? Don...
*February 2, 2011 by charlie*

**math**

Determine the number of permutations of the letter of the word "education"
*June 11, 2013 by michael*

**math**

Determine the number of permutations of the letters of the word "EFFECTIVE"
*June 11, 2013 by michael*

**Math/ Algebra 2**

How many different ways can the letters in the word COMBINATIONS be arranged if the letter C is first and the letter S is last? Thank you in advance ^^
*April 20, 2012 by Cindy*

**probability & statistics**

How many distinguishable permutations of letters are possible in the word COLORADO? is it 8!/3!?
*June 13, 2012 by Anonymous*

**permutations with identical items. **

how many four letter arrangements are there for the word Mattawa?
*January 23, 2014 by Anon*

**math**

In a gift wrapping department, a customer can choose from x different paper, y different ribbons and z different greeting cards. There are 160 different paper, ribbon, and greeting card combinations possible. List three of the possible combinations.
*February 2, 2011 by Anonymous*

**Algebra**

please solve x+5y=10 -2x-10y=-20 Since the second equation can be obtained from the first (by multiplying both sides by -2), they are not independent and there is no unique solution. There are an infinite number of x,y combinations that are solutions.
*March 20, 2007 by Tony*

**Science**

We did a experiment in class to recognize chemical change. I don't really get this question: Identify the combinations of chemicals in which chemical changes occurred. If the chemical changes occured in all of the combinations, then what would be a good answer? I get the ...
*March 23, 2010 by Sara*

**Math**

i need the answer to finding the number of three letter permutations of the letters l,s,u,v,r
*April 13, 2011 by Rory*

**GEOMETRY**

Let P=(p1,p2,…,p7) be a permutation of the integers 1,2,…7. For how many permutations P are all seven sums S1=p1,S2=p1+p2,…,S7=p1+p2+⋯+p7 not multiples of 3?
*March 21, 2013 by Anonymous*

**college Mathematics**

I am having problems with permutations what is 5P2 The answer I have is 20 am I wrong?
*April 26, 2013 by Carol *

**pre algebra**

Write rules for using absolute value to compare two integers. BE sure to take all of the possible combinations in to account. __ I don't know what to write?
*November 6, 2009 by john*

**math**

How many distinguishable permutations of letters are possible in the word? BASEBALL a. 20,160 b. 10,080 c. 5040 d. 40,320
*May 4, 2008 by Dana*

**math**

The number of distinguishable permutations that can be formed from the letters of the word PRINT is 120.ITS THAT TRUE or FALSE
*April 19, 2011 by Teii*

**math**

Write the number of permutations in factorial form. Then simplify. J K L M N O P 7! 720 8! 40,320 7! 49 7! 5,040 I think it is d.
*May 27, 2014 by luca*

**COMBINATION!!MATH!!!hurryyy!!!**

Cards are drawn at random from a 52-card deck. Find the number of different 5-card poker hands possible consisting of 3 aces and 2 kings? i dont knw how to do this kind of problems..can anyone teach me??? Forget about the fact that there are 52 cards in a deck. The number 52 ...
*January 5, 2007 by Katrina*

**Genetics**

If there's 4 nucleotides, what is the probability to get a start codon ? If I understand correctly; a codon = 3 nucleotides, so there's 2 possible combinations with 4 nucleotides (AAAX and XAAA), of the 64 possible codons, there's only 1 start codon. So 2 possible combinations...
*January 8, 2008 by Anonymous*

**Biology**

There are 20 amino acids that cells use to build the numerous amounts of proteins that are essential for life. If a protein molecule consisted of 100 amino acids, how many combinations are possible? What is the probability that out of the total possible combinations of the 100...
*November 6, 2011 by Peter*

**Pre-Algebra [Permutations]**

1.A furniture store sells couches that are available in 3 different styles, 7 different colors, and 2 different sizes. How many different couches are available? - If I multiply all of these, would that give me the answer? If so, the answer would be 42. 2.In how many different ...
*June 25, 2009 by mysterychicken*

**Math**

A popular toy for the upcoming holiday season comes in one of 6 different colors, with one of 10 different costumes, and with one of 4 different accessory sets. A store plans to display 10% of all possible combinations. How may different combinations of the toy will the store ...
*September 26, 2013 by Ms Ame*

**Math**

You're friend tells you about a new online music site called ComboAl- bum that lets you choose any 10 songs from their song library for 9:99. ComboAlbum's advertising says their song catalogue is so large there are over 10; 000; 000 different song combinations available for ...
*October 1, 2012 by John*

**algebra**

Five socks colored blue, brown, black, red, and purple are in a drawer. How many combinations of three socks can be randomly selected from the drawer?
*February 8, 2011 by sal*

**Math permutations**

pi=(245)(1354)(125) 1) Write as a product of disjoint cycles. Ans: (14)(253) Is this correct? 2) Solve : pi^2, pi^5,pi^(-1) 3) What's the order of pi? and why?
*November 24, 2007 by Rick*

**math**

-Find the number of distinguishable permutations of the given letters ``AAABBBCCC''. -If a permutation is chosen at random, what is the probability that it begins with at least 2 A's?
*September 27, 2012 by bballer*

**Liberal Arts Math **

Find the indicated value: a. 4C2 b. List all of the permutations of {a,b,c,d} when the elements are taken two at a time.
*September 29, 2012 by Dawn*

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