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Pulsified333
 one year ago
Two fair die are rolled. (1) What is the probability they sum to 10, 7, or 4? (2) What is the probability they sum to at least 11?
Pulsified333
 one year ago
Two fair die are rolled. (1) What is the probability they sum to 10, 7, or 4? (2) What is the probability they sum to at least 11?

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So for two dices, there are 6*6 = 36 possible combinations right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0how many combinations add up to 4?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.01,3 3,1 2,2 there are 3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so for 4, it is 3/36 = 1/12

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so you can do the same for 7 and 10 to for (1).

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.1are you saying that there are 6 ways to add up to 6?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes, so its probability is 1/6

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.1btw how did you get 1/12 for 4?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sorry sorry no there's 5 ways to add up to 6

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.1The number is seven my bad

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.1can you explain how you got 3/36 though for 4?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.03 combinations to get 4 / all the possible combinations = 3/36.

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.1how is it 36 though

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0there are 6 possibilities on the first dice & 6 possibilities on the second dice. 6 * 6 = 36

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.1oh never mind. sorry I didn't think about that, I've had a really long day. You are right

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.1so in total it should be 6/36+3/36+3/36=12/36=1/3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and for (2), you just have to find the probability that the sum is 12 and subtract it from 1

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.1why subtract one for the sum is 12?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0at least 11 is the same as not 12, becuase the biggest sum is 12

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.1right. So that means 11 and 12?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so, "at least 11" refers to sums 211. so the only sum that is not considered is 12.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so what you have to do is 1  (probability of getting 12) = probability of all sums at least 11

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.1so is that mean the answer is 35/36?

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.1it says 35/36 is wrong but the first answer is right

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0really? :,o let me think I'm sorry...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0AHHH I READ THE PROBLEM WRONG... YOU WERE RIGHT IT IS PROBABILITY OF 11 AND 12

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I CAN'T BE MORE SORRY THAN THIS SORRY

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.1:D thank you very much
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