A pair of dice is thrown. What is the probability that one of the faces is a 3, given that the sum of the two faces is 9?
A) 1/3
B) 1/36
C) 1/6
D) 1/2
E) 1/4

Name: A pair of dice is thrown. What is the probability that one of the faces is a 3, given that the sum of the two faces is 9? A) 1/3 B) 1/36 C) 1/6 D) 1/2 E) 1/4
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Question

Quizplus · Accepted Answer

Set up sample spaces: 36 total; 4 total to 9; 2 of these have a three on the face. Given that there are 4 choices and 2 have a three, the probability is ½.

A Pair of Dice Is Thrown