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Pulsified333
 one year ago
Two Fair die are rolled. What is the probability of one of the dice showing 5 or the sum being at least 8?
Pulsified333
 one year ago
Two Fair die are rolled. What is the probability of one of the dice showing 5 or the sum being at least 8?

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random231
 one year ago
Best ResponseYou've already chosen the best response.0write down the cases in which the sum can be 8 with one of them being 5

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0okay should I include (5,3) and (3,5)

random231
 one year ago
Best ResponseYou've already chosen the best response.0arent you getting the answer?

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0it says a sum of at least 8

random231
 one year ago
Best ResponseYou've already chosen the best response.0oops yeah so inluse(5,4) (4,5), (5,5) (5,6)(6,5)

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0okay I did that and there are a total 15 ways to make a sum of at least 8

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1"okay I did that and there are a total 15 ways to make a sum of at least 8" That is correct. It is necessary to avoid double counting, therefore the next step is to find out how many occurrences of 5 there are on one of the dice where the sum of the numbers on the pair is less than 8.

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0There are two, but does (5,5) count or no because its on two die?

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1There are more than two. Also (5, 5) does not count because it is already in the total of the 15 ways to make at least 8.

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1Yes, four: (2, 5) (1, 5) (5,2) (5,1).

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0okay, so now what?

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1So the total number of ways to get one of the dice showing 5 or the sum being at least 8 (without double counting) is 15 + 4 = 19 ways. What is the value of the sample space?

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0what do you mean the value of the sample space?

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1The sample space has 36 possible combinations of numbers.

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0oh okay. Now i know what you mean

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1Yes, you are correct.

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0OMG thank you so much, I've been stuck on that problem for over an hour :D. You are a lifesaver xD
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