Tuesday

July 29, 2014

July 29, 2014

Number of results: 90,803

**Geometry**

If two six-sided dice are rolled, the probability that they both show the same number can be expressed as a b where a and b are coprime positive integers. What is the value of a+b ?
*April 11, 2013 by stranger*

**trig**

two dice are rolled, find p(2,then 3)
*May 10, 2012 by Lashae*

**probability**

We have two fair three-sided dice, indexed by i=1,2. Each die has sides labelled 1, 2, and 3. We roll the two dice independently, one roll for each die. For i=1,2, let the random variable Xi represent the result of the ith die, so that Xi is uniformly distributed over the set...
*February 27, 2014 by jon*

**help please**

Two six sided dice were rolled, and a friend tells us that the numbers that came up were identical. Find the probability that the sum of the numbers was as follows: a) 4 b) 11 c) an even number d) an odd number
*July 7, 2013 by Annonymous*

**Math(Probability)**

Let X and Y equal the outcomes when two fair six-sided dice are rolled. Let W = X + Y. Assuming independence, find the p.m.f. of W when (a) The first die has three faces numbered 0 and three faces numbered 2, and the second die has its faces numbered 0, 1, 4, 5, 8, and 9. (b...
*April 27, 2011 by Sandy*

**math**

two dice are rolled. their sum is recorded. what is the probability that their sum is between five and ten?
*April 18, 2011 by Donald*

**Probability **

A pair of fair dice is tossed 3 times. Find the probability a seven appears 3 times.
*February 20, 2011 by Traci*

**math**

If two dice are rolled, what is the probability that their sum will be a number greater than 5 ? [A]1/6 [B]1/3 [C]13/18 [D]5/6 [E] None of these. i think it is c am i right? 13/18 so i am right? What is the probability the sum is 2,3,4 or 5? If you find that and subtract it ...
*October 4, 2006 by cassidy*

**Math urgent**

If two "fair" dice are tossed what is the probability that the sum of their faces will be a multiple of 3? Show or explain how you got your answer?
*June 3, 2010 by Mimi*

**math help please**

two cards are dealt in succession from a standard deck of cards. what is the probability that the second card is red give that the first card was a heart. so i do p(R/H), then i know you go R*H/H. but how do i get the probability please explain! thanks. if 2 dice are rolled, ...
*January 19, 2009 by Kennedy*

**Geometry**

Six standard six-sided die are rolled. Let p be the probability that the dice can be arranged in a row such that for 1\leq k \leq 6 the sum of the first k dice is not a multiple of 3. Then p can be expressed as \frac{a}{b} where a and b are coprime positive integers. What is ...
*March 12, 2013 by John*

**Statistics **

Two dice are tossed. What is the probability that the sum of both dice is a prime number? This is what I have so far Presuming two fair, 6-sided dice, each numbered 1 through 6: You can achieve one of the following results on any given roll: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12...
*July 2, 2013 by Meg*

**Stats**

Two dice are tossed. What is the probability that the sum of both dice is a prime number? this is the answer i have ; Presuming two fair, 6-sided dice, each numbered 1 through 6: You can achieve one of the following results on any given roll: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12...
*July 1, 2013 by Megan*

**algebra**

need a pair of dice where each number from 1 - 12 has an equal chance of being rolled. You have been given the task of designing the new dice for the board game. You are to use two standard cubes (each with six faces) and number them in such a way that the probability of ...
*February 8, 2010 by Delmar*

**Stats**

1. If you were to receive $3 for every time a 7 or 11 was rolled with two fair dice and lost $1 for all the ther values, what is the expected value (mean) for you as a gambler in this experiment? (please show work so I know how to do it). 2. Going with the question above, ...
*April 28, 2013 by Kayla*

**6 grade math**

Two dice are rolled. Find the odds in favor of a sum of 6.
*January 18, 2010 by James*

**math**

If a dice is rolled 3 times, what is the probability of rolling a prime number, then a 2, and then a 5?
*February 28, 2012 by Karen*

**Albebra**

2 dice are rolled.What is the probability that neither both numbers are 2's or their sum is less than 6?
*May 28, 2014 by Frank*

**science**

A pair of fair dice is tossed once. If the sum of the two numbers is greater than 9, the probability that one of the numbers is a 6 =
*July 17, 2012 by chinthaka*

**math **

A pair of dice is rolled. What is the probability of the sum of the numbers shown uppermost is less than 6?
*February 20, 2011 by Vanny*

**Math**

Alice and Finn roll two number cubes. Which of the following rules will make the game fair? Alice wins if a total of 5 is rolled. Finn wins if a total of 9 is rolled. Alice wins if a total of 7 is rolled. Finn wins if a total of 8 is rolled. Alice wins if a total of 3 is ...
*February 14, 2013 by Jonathon*

**pre algebra**

Two 6-sided dice are rolled. Find the odds of rolling s sum that is a prime number
*April 3, 2011 by Anonymous*

**Probability - Check**

Could someone check these answers for me. Thanks 1. (3x+y)^7 = 2187x^7 + 5103x^6y + 5103x^5y^2 + 8505x^4y^3 + 2835x^3y^4 + 567x^2y^5 + 63xy^6 + y^7 2. Eight people are boarding an airplane. Two have tickets for first class and board before those in the economy class. In how ...
*March 15, 2009 by Marin*

**Math/Probability**

Anna and bob play a game in which Anna begins by rolling a fair dice, after which bob tosses a fair coin. They take turns until one of them wins. Anna wins when she rolls a 6. Bob wins when the coin lands on heads. What is the probability that Anna will win the game? Well ...
*May 31, 2010 by Ally*

**Algebra2**

how do you solve this? A dice is rolled twice. What is the probability of getting a multiple of 3 on the first roll or a total of 7?
*April 10, 2012 by A*

**Math probability**

You roll two fair 6-sided dice. Let be the sum of the two independent rolls. (a) Give the PMF of in table form. (b) Give a mathematical expression for the PMF of .
*April 19, 2014 by Ozan*

**Binomial Math**

A fair die is rolled four times. Calculate the probability of obtaining exactly two 5s. (Round your answer to four decimal places.)
*January 27, 2013 by Bersy*

**math**

what is the probability of rolling a 2 when a fair number cube is rolled?
*May 26, 2011 by Antonio*

**Math (Probability) PLEASE HELP!!**

If a 20-sided fair die with sides distinctly numbered 1 through 20 is rolled, the probability that the answer is a perfect square can be expressed as a/b where a and b are coprime positive integers. What is the value of a+b?
*April 27, 2013 by Hale*

**Math**

Which pair has equally likely outcomes? List the letters of the two choices below which have equal probabilities of success, separated by a comma. A standard deck of cards has 12 face cards and four Aces (Aces are not face cards). A. drawing a red seven out of a standard 52 ...
*July 26, 2011 by Jen*

**probability**

consider the experiment of the rolling a pair of fair dyes 1white and the other red are the events (a)doubles is rolled (b)The red is shown two or three,independ
*July 12, 2014 by pooja*

**math**

A pair of dice is rolled, and a number that appears uppermost on each die is observed, Refer to this experiment and find the probability of the given event. (Enter your answer as a fraction)The sume of the numbers ia an add number.
*April 21, 2012 by Maria*

**help!!!!! Probability!!!**

A fair 6-sided die is rolled twice. The probability that the second roll is strictly less than the first roll can be written as a/b, where a and b are positive, coprime integers. What is the value of a+b?
*May 26, 2013 by fweng*

**counting and probability**

A fair, six-sided die is rolled eight times, to form an eight-digit number. What is the probability that the resulting number is a multiple of 8? Express your answer as a common fraction.
*November 15, 2012 by zamanofdoom*

**Math**

If you're rolling two dice, what is the probability that the sum of two dice is a 7?
*April 15, 2012 by Jenna*

**math **

A pair of dice is rolled, and the number that appears uppermost on each die is observed. Refer to this experiment and find the probability of the given event. One die shows a 5, and the other is a number less than 2.
*February 20, 2011 by Vanny*

**Probability**

three fair dice are tossed. Let X,Y,Z denote the respetive numbers showing on their top faces. Assume X,Y,Z are independent. a) find P(X<Y) b) Show that the events (X<Y) and (Y<Z) are NOT independent heeelp...
*November 18, 2007 by Danny*

**Math**

Anna and bob play a game in which Anna begins by rolling a fair dice, after which bob tosses a fair coin. They take turns until one of them wins. Anna wins when she rolls a 6. Bob wins when the coin lands on heads. What is the probability that Anna will win the game? Well ...
*May 31, 2010 by Sam*

**probability and statistics I NEED HELP**

A six-sided die is rolled 20 times and a 5 is rolled 9 times. a) State a null and alternative hypothesis for the die being fair. b) Can the null hypothesis be rejected at the .01 significance level?
*May 31, 2011 by Julie*

**Math**

What is the probability that rolling four fair, six-sided dice produces an even sum?
*February 15, 2011 by Diana*

**Algebra102**

A pair of dice is rolled~ A possible event is rolling a multiple of 5. What is the probability of the complement of the event? A. 2/36 B. 12/36 C. 29/36 D. 32/36
*May 20, 2010 by NatoshaMarie*

**geometry**

Paul claims, the probability of rolling a sum of 6 when you roll two dice is 1/11, because two dice have sums 2 through 12 which means there are 11 possible sums. "How do you respond?"
*January 13, 2011 by crystal*

**Math**

In how many ways can two dice be rolled to yield a sum divisible by 3?
*February 15, 2011 by Lilly*

**Help with math**

I am stuck on a probability question. Please help and tell me the easiest way to find the answer to this.. I am confused and keep getting 5/6 A fair die is rolled..what is the probability of rolling an odd number or a number less than 3? the actual answer is 2/3.. tell me how ...
*November 2, 2011 by HM*

**HELP MATH**

I am stuck on a probability question. Please help and tell me the easiest way to find the answer to this.. I am confused and keep getting 5/6 A fair die is rolled..what is the probability of rolling an odd number or a number less than 3? the actual answer is 2/3.. tell me how...
*November 2, 2011 by HM*

**math**

a pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 8, given that one die is showing a 5? Taking into consideration the numbers 1-6 on the second die wouldn't the probability be 1/6?
*November 22, 2010 by m*

**precalculus**

Suppose that wo dice, one red and one green are rolled. How Many different outcomes are possible for the pair of dice?
*September 9, 2007 by Jane*

**Probability independence**

A fair die is rolled twice with the two rolls being independent of each other. Let M be the maximum of the two rolls and D be the value of the first roll minus the value of the second roll. Are M and D independent?
*January 22, 2009 by Julie*

**Probability**

A fair die is rolled twice with the two rolls being independent of each other. Let M be the maximum of the two rolls and D be the value of the first roll minus the value of the second roll. Are M and D independent?
*January 21, 2009 by Julie*

**discrete mths**

Two dice, one red and one white are rolled. What is the probability that the white die turns up a smaller number than the red die ?
*March 25, 2014 by Anonymous*

**Statistics**

Find the probability that the sum is as stated when a pair of dice is rolled. A.4 or 11 or doubles B. 8,given that the sum is greater than 4. C.Even,given that the sum is greater than 4. A. 4 can be obtained by 1&3, 3&1 or 2&2. 11 can only be obtained by 5&6 or 6&5. Doubles ...
*April 2, 2007 by Mary*

**Brooke High School**

Two dice are rolled. What are the odds in favor of a sum less than 5?
*December 5, 2009 by Jackie*

**Brooke High School**

Two dice are rolled. What are the odds in favor of a sum less than 5?
*December 5, 2009 by Jackie*

**math**

if two dice are rolled one time, what is the possibility of getting a number smaller than 5
*October 10, 2011 by ilda*

**probability**

An octahedral die has eight faces numbered 1 to 8, each of which comes up with equal likelihood (you can see a picture of one in Diagram 3 of the Test 1 Supplement). Two such dice are rolled, and the product of the numbers is noted. In lowest terms, what are the odds against ...
*April 5, 2011 by nathon*

**Discrete Mathematics**

Two Dice, one red and one white are rolled, what is the probability that the white die turns up a smaller than the red die ?
*March 18, 2014 by Anupam*

**probability - confused**

A fair, six-sided die is rolled eight times, to form an eight-digit number. What is the probability that the resulting number is a multiple of 8? Express your answer as a common fraction. I think the last 3 digits have to be divisible by 8 to be a multiple of 8...
*November 20, 2012 by confused*

**probability please help!!**

A fair, six-sided die is rolled eight times, to form an eight-digit number. What is the probability that the resulting number is a multiple of 8? Express your answer as a common fraction. I think the last 3 digits have to be divisible by 8 to be a multiple of 8...
*November 20, 2012 by confused*

**Math**

When two balanced dice are rolled, 36 equally likely outcomes are possible. What are the odds of getting a 5 or 6?
*October 14, 2009 by Jenny*

**Probabilities**

Two dice are thrown and the sum of the number of dots on the dice are noted. The probability that the sum is neither 2 or 3 is?
*April 21, 2009 by Andrey L*

**Probability**

Two cubes are rolled .both cubes are labelled 1 to 6.the number rolled are added. What is the probability of each out come ? a) sum is 12 B)the sum is less than 4. C)the sum is 7. D)the sum is 2.
*May 29, 2012 by Sam*

**Probability **

Two number cubes are rolled .both cubes are Labelled to 6. The numers rolled are added . What is the probability of each outcome? A) the sum is 12. B) the sum is less then 4. C) the sum is 7. D) the sum is 2.
*May 29, 2012 by Sam*

**math**

probability... two dice are tossed.... and their sum is recorded ..find probability p ( sum is between 2 and 9)
*August 25, 2010 by tana*

**probability**

two dice are tossed. find the probability that the sum is odd given that the sum is 5 or less
*June 12, 2012 by Anonymous*

**MATH 157**

Can anyone please help me understand these math problems. #4. How many three-symbol codes (letter-number-number)can be made from the letters S, P, Y, and two-digits from the set of (0, 1, 2,..., 9) without repetition? #16. A pair of dice are rolled and the sum on their ...
*August 4, 2010 by Rayna *

**Statistics**

For a math assignment we need to design a dice roll game with different expected values of winning. The game should require a player to make a bet on the sum of one roll of two dice. If the dice sum to that number, the player wins; otherwise, he loses. We need to create a fair...
*February 1, 2012 by Jaime*

**Math **

Two 6-sided dice are rolled at the same time. How many outcomes correspond to the event that the sum of the numbers is 5?
*June 9, 2014 by Sami*

**Math**

What is the probability of rolling a number less than 4 when a fair number cube is rolled?
*May 26, 2011 by Antonio*

**Math**

A pair of fair dice is rolled. Let E denote the event that the number landing uppermost on the first die is a 3, and let F denote the event that the sum of the numbers landing uppermost is 6. Determine whether E and F are independent events
*August 15, 2010 by Jack*

**algebra**

Suppose that in a particular game two dice are tossed, and various amounts are paid according to the outcome. Find the requested probability. (Enter the probability as a fraction.) If a seven or an eight occurs on the first roll, the player wins. What is the probability of ...
*May 27, 2014 by Mary Ann *

**Math**

You are given 9 to 1 odds against rolling a sum of 8 with the roll of two fair dice, meaning you win $9 if you succeed and you lose $1 if you fail. Find the expected value (to you) of the game.
*September 30, 2012 by Alisha*

**Algebra 2**

What is the probability when you roll 2 dice and you roll a number greater than 4 on the first dice and a 2 on the second dice? pls help :)
*March 4, 2012 by Mary*

**Math**

A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 8, given the one die is showing a 5?
*August 5, 2009 by Patti*

**math**

A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 8, given that one die is showing a 5?
*September 30, 2009 by Aleah*

**mATH**

A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 7 given that one die is showing a 4?
*October 16, 2009 by katelynn*

**math**

A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 8, given that one die is showing a 5?
*December 13, 2009 by Codi*

**math**

A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 8, given that one die is showing a 5?
*December 16, 2009 by t*

**Math 156**

1)Suppose you buy 1 ticket for $1 out of a lottery of 3000 tickets. If the prize for the one winning ticket is to be $500, what are your expected winnings? I'm assuming the answer for this one is $0.00 2)A basketball player with a free throw shooting percentage of 60% gets ...
*August 7, 2009 by jessica*

**college math**

a pair of dice are rolled and the sum is recorded. What is the probability that the sum shown is 8 given that one die is showing 5? Is this done correctly? P(8|5)=1/6 x 1/6= 1/36 I really just want to make sure I have done this the right way!
*November 18, 2009 by Lauren*

**Math**

You have three dice. What is the probability to find rolling two same number?
*October 17, 2007 by Sima*

**math/Probability**

what is the probability of rolling a sum that exceeds 4 with two dice
*June 11, 2010 by anna*

**Math**

Consider a die with 8 sides, marked one, two, three, and so on. assuming equally likely outcome, find the probability that the sum of two dice is the given number. If p(10)=
*June 13, 2012 by Linda*

**math**

if two dice are rolled 360 times, approximately how many times should you expect a sum of 7
*May 10, 2010 by tk*

**Probability**

Roll two fair dice. what is the probability that you get a 2 and a 5 without regard to which is on which die? What is the probability of at least one 2 or one 5? What is the probability of a sum of 7? "what is the probability that you get a 2 and a 5 without regard to which is...
*December 3, 2006 by Pam*

**math**

A fair, six-sided die is rolled eight times, to form an eight-digit number. What is the probability that the resulting number is a multiple of 8? Express your answer as a common fraction.
*July 27, 2012 by Anonymous*

**Probability**

A pair of dice is rolled, one black and one white. Find the probability of each of the following events. 1. The total is between 3 and 7. My answer: 1/3 2. The total is 13. My answer: 0 3. The numbers are 2 and 5. ????????? 4. The black die has 2 and the white die has 5...
*February 8, 2014 by Anonymous*

**Probability II =) **

You are shown five cards, Three have X written on them and two have Y. The cards are turned over so the X abd Y are no longer visible, and shuffled/ One card is picked and laid face up on the table. It is an X. If the remaining cards are shuffled and another card is now laid ...
*February 19, 2010 by Kesha*

**Math**

A spinner with three equal spaces (labeled A,B, and C) is spun. If the spinner lands on A or C a coin is flipped. If the spinner lands on B a standard 6-sided dice is rolled. What is the probability of spinning a B and rolling a prime?
*June 5, 2013 by Jennyy*

**Math**

A spinner with three equal spaces (labeled A,B, and C) is spun. If the spinner lands on A or C a coin is flipped. If the spinner lands on B a standard 6-sided dice is rolled. What is the probability of spinning a B and rolling a prime?
*June 5, 2013 by Jennyy*

**statistics**

your teacher has invented a fair dice game to play. your teacher will roll one fair eight sided die and you will roll a fair six sided die. each player rolls once and the winner is the person with the higher number. in case of a tie neither player wins. a. let A be the event "...
*January 6, 2013 by bri*

**Math**

Two dice are rolled what are the odds of getting a smaller number on the second roll? P ( same number or sum greater than 8)
*April 29, 2014 by Chris*

**Math**

A pair of dice are rolled and the sum on their upturned faces is recorded. What is the probability that the sum showing is 8, given that one die is showing a 5? Answer: 1/6. Did I come up with the right answer? Thanks.
*August 3, 2009 by B.B.*

**Algebra**

This question deals with Exponential Growth and Decay Test. Question:Consider the following:Start by tossing 30 dice. Then remove the dice that show 5s and 6s and toss the remaining dice. Repeat this process until you only have 2 dice remaining. The data in the table were ...
*January 17, 2010 by Mary*

**math**

1. A teacher has 10 boys and 12 girls in her grade school class. In how many ways can she select 8 of the children to be in a play if she must select 5 boys and 3 girls. 2. The manager of the various displays in the Acme Fine Clothing Emporium has a window which will hold 4 ...
*July 29, 2012 by kwame*

**math**

given a pair of dice, design and explain two games: one must be fair, and the other unfair.
*September 4, 2010 by Tenderly*

**Stats HELP PLEASE**

The game of Yahtzee is played with five fair six-sided dice. A turn consists of rolling all five dice, selecting the ones you want to keep, re-rolling the rest, and then doing this one more time, if necessary. You need to match certain conditions in order to score points. (For...
*October 28, 2009 by CM*

**math**

If a 6-sided number cube is rolled twice, what is the probability that a 1 is rolled both times?
*April 3, 2014 by Anonymous*

**Dice Probability**

What is the probability of rolling two number cubes and having the first cube land on 2 and the second cube land on 3? I got 2/6 * 3/6 = 6/36 which becomes 1/6 1/6 probability is my answer correct?
*September 30, 2013 by Alex*

**Algebra**

Need help with these-- 36. Can two sets of data have the same mean, but not the same variance? 41. Measures that describe the spread of the values in a set of data are called ______. 44. How many ways can a combined 6 be rolled with two standard dice? 5? Thanks -MC
*June 22, 2010 by mysterychicken*

**statistics, are my calculations correct?**

classify the following as discrete or continuous random variables: a) the time it takes to run a marathon- i think that it is discrete b) the number of fractions between one and two- i think that it is discrete? c) a pair of dice is rolled and the sum to appear on the dice is ...
*October 23, 2010 by mary- please check calculations.*

Pages: <<Prev | 1 | **2** | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>