







Order of operations 
20150912 

Tanisha pose la question : I would just like to double check if something like 5x squared times 4x cubed equals 20x to the power of 5??
It's just that we were told you can only answer an equation like this if the base is the same...so does that mean the x part or the whole thing like 5x?
I'm sorry if that didn't make sense!
Thank you for your help!! Penny Nom lui répond. 





A conditional probability problem 
20140413 

Chiluya pose la question : Two fair dice are rolled. what is the probability that the number on the first die was at least as large as 4 given that the sum of the two dice was 8? Penny Nom lui répond. 





Dice 
20130514 

Julia pose la question : What is the probability of rolling(as many times as necessary) a die and getting a total number(sum) when all the rolls are added together of 11? Lorraine Dame lui répond. 





The difference of the numbers on two dice 
20120819 

dilys pose la question : Two fair dice are thrown. Find the probability that the difference of the two numbers is divisible by 4? Chris Fisher and Lorraine Dame lui répond. 





Rolling three dice 
20120126 

Aishwarya pose la question : A red, a blue and a green die are all thrown at the same time. Display all the possible outcomes in a suitable way. Find the probability of obtaining:
1. A total of 18 on the three dice
2. a total of 4 on the three dice
3. a total of 10 on the three dice
4. a total of 15 on the three dice
5. a total of 7 on the three dice
6. the same number on each die.. Robert Dawson lui répond. 





A single die is rolled twice 
20091103 

Michelle pose la question : A single die is rolled twice. Find the probability of getting two numbers whose sum exceeds 5.
I can't seem to come up with any of these answers, Help. A. 0.72 B. 0.89 C. 0.68 D. 0.58 Penny Nom lui répond. 





Toss a coin and roll a die 
20090921 

Celeste pose la question : Can you please tell me how to set up this problem to find the answer. I know they are independent from there I don't know.
a coin and a regular sixsided die are tossed together once. What is the probability that the coin shows a head or the die has a 5 on the upward face? Penny Nom lui répond. 





Two dice and the difference of squares 
20090421 

dave pose la question : I dont understand how to do this: Two fair dice are rolled. What is the probability that the difference of the squares of the numbers is divisible by three? the answer is 5/9 Harley Weston lui répond. 





A die is loaded so that... 
20090130 

Larry pose la question : Hi. I'm having trouble solving this problem. Would you be kind enough to point me in the right direction?
A die is loaded so that the probability of a particular face rolling up is proportional to the number of dots
on the face. In other words, getting a six is three times as probable as getting a two. what is the probability
of getting an even number in one toss? Victoria West lui répond. 





Rolling a 5 before an 11 
20080227 

Jeremy pose la question : If rolling two sixsided dice, what is the probability that a sum of 5 will be rolled before a sum of 11? Stephen La Rocque and Harley Weston lui répond. 





Rolling a die repeatedly (you can't just add percentages) 
20071004 

Howard pose la question : If my son has a 16.66% chance of rolling a particular number on a dice,
and he rolls for it 6 times, he knows (from experience) that his
odds of getting at least 1 right are not 100% (16.66% +16.66%+16.66% etc).
He asked me if there was an equation that would give him the correct
percentage chance of success when trying X times for a Y% chance
of something. Victoria West lui répond. 





The probability of rolling double sixes twice in a row 
20070710 

Matt pose la question : what is the probability of rolling double sixes twice in a row? Stephen La Rocque lui répond. 





The difference between two dice 
20070602 

smiley pose la question : Two standards dice are rolled. Determine the probability
that the difference between the two numbers on the dice is 2 Penny Nom lui répond. 





Rolling two dice 
20070306 

Mary pose la question : I have a test and I need to know how to figure out how to find the probability of rolling 2 dice and coming up with a 7 for both rolls. Could you please explain how to find the probability? Thank you. Mary Penny Nom lui répond. 





A probability question which resulted from a game of Yahtzee 
20051231 

Robert pose la question : Could someone please assist me with this probability question which resulted from a game of Yahtzee we were playing in Melbourne, Australia on our holidays.
The object on this turn was to throw a “large straight” which is 5 numbers in sequence from 5 dice numbered 1 – 6. A player initially throws all 5 dice and then selects those dice they want to throw again for a further two more times. In this instance the player on their first throw, threw a 1,2,3,4 and 6.
Question: What is the respective probabilities of gaining a straight if they were to –
a) put back say the 6 and try and throw a 5 on the two further throws or…..
b) put back the 1 and 6 and try and throw a 1 and 5 or 5 and 6 on the two further throws bearing in mind that if one of the numbers was a 5 on the second throw they could hold that number and try for a 1 or 6 on the third throw.
I would be most appreciative if someone could assist in showing me how to calculate the probabilities particularly in the second instance (b). Penny Nom lui répond. 





Four 25sided dice 
20051124 

dan pose la question : Simply put, I am curious to find the likelyhood of each possibility (4100) if I were to roll 4 25sided die. It seems to start off simply, as 1, 4, 10, 20...following the inside diagonal of Pascal's triangle. But as soon as i reach the point where the sum is greater than the number of sides, Pascal's no longer seems to work. I would be greatly appreciated if I could be informed of the proper formula to find this answer, or perhaps if my theory of doing it is wrong. Andrei Volodin and Shaun Fallat lui répond. 





Three dice 
20040510 

A student pose la question : If one has 3, 6 sided dice what is the probability of the numbers that are rolled to total 4 through 10 inclusively?
Subsequent to this, what is the probability to do this consecutively...say 3 times? Peny Nom lui répond. 





A game of dice 
20020513 

Mika pose la question : To play a game a dice is rolled to see who plays first. four players are going to play the game. what is the probability that at least two people roll the same number? ANSWER: P(least 2 people roll the same #)=number of player/total outcome P = 4!/4C2 = 24/4C2 = 4 the answer is 40% Andrei Volodin lui répond. 





A probability tree 
20020504 

A student pose la question : Karl and Naomi roll three dice. Karl gives $10 to Naomi if the number 5 turns up once, twice or three times. Naomi gives Karl $3 in all other cases. A) construct the probability tree for this situation.
B) Does Karl have an advantage in this game? Justify your answer. My problem is I am unfamiliar on how to draw this probability tree and seem to be having a lot of difficulties, when you have a chance please answer this math problem and get back to me with the results. Penny Nom lui répond. 





Rolling 5 sevens before rolling a six or an eight 
20020120 

Tony pose la question : When rolling 2 dice, what is the probability of rolling 5 sevens before rolling a six or an eight? Andrei Volodin and Penny Nom lui répond. 





Rolling two dice 
20010910 

Owen pose la question : This probability question has been bugging me for a while. Two ordinary dice are rolled. If it is known that one shows a 5, what is the probability that they total 8? I have two different but (seemingly) correct solutions. Andrei Volodin lui répond. 





Mutually exclusive 
20010605 

Marje pose la question : What does the mathmatical term "mutually exclusive" mean. Pleas diagram if possible. Penny Nom lui répond. 





Probabilities and dice. 
20010504 

Carmen pose la question : Hi! My name is Carmen! I am a member of a grade 5 class in Edmonton, AB. We were talking about probability in math, and I was wanted to know what the probability (odds) of rolling two sixes would be rolling two dice? If it is not to diffucult could you tell me what the probability (odds) of rolling any number with two dice were? Andrei Volodin and Penny Nom lui répond. 





Expected value 
20010424 

Cindy pose la question : A game consists of rolling a single fair die. If a number great than 4 is rolled you win the number of dollars showing on the die. If any other number is rolled, you receive $1.00. What is the expected value of this game? Andrei Volodin lui répond. 





Conditional probabiity 
20010122 

Wallace Yang pose la question : A pair of sixsided fair dice is thrown. Find the probability that the sum is 10 or greater if it is given that a 5 appears on at least one of the dice. Penny Nom and Claude Tardif lui répond. 





Three dice 
20010103 

John Read pose la question : I have three dice (A, B, C.) Three sides of each dice are blank. Three sides of each dice have a number. When the dice are thrown, it must be possible to result in the numbers 1 to 49 in any combinations without doubling up on any figure. i.e. Different combinations resulting in the same end number. I managed to get from 1 to 47 before getting stuck. Claude Tardif lui répond. 





Review problems 
20000918 

Dee pose la question : A card is selected from an ordinary deck of cards. What is the probability of. . . selecting 2 aces in a row? If you toss two dice, what would be your probability of the following? . . . Penny Nom lui répond. 





Three dice 
19981117 

Ryan Allinson pose la question : Rolling three regular dice how many different ways could a sum of 10 be rolled? Hope you can help. Can you please show me how this is done? Penny Nom lui répond. 





Snake Eyes 
19980720 

Would you please advise me what the probability is of rolling snake eyes on a pair of dice is? My recollection is 1 out of 6 multiplied by 1 out of 6 = 1 out of 36 is this correct? Jack LeSage and Penny Nom lui répond. 





Rolling a seven 
19980611 

Bruce Thompson pose la question : What is the probablity of rolling two dice and it coming out as seven? a) 1/6 b) 1/36 please give me the correct awnser and explain please. Harley Weston lui répond. 

