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Question: 2014 Winter Final - 15

Author: Michiel Smid

We roll two fair and independent dice. Define the events

A = "at least one of the dice shows a 3",
B = "the sum of the dice is 5".

What is the conditional probability $\Pr(A|B)$?

(a)

1/2

(b)

1/8

(c)

1/9

(d)

1/4