Question 881361: The numbered disks shown are placed in a box and one disk is selected at random. Find the probability of selecting a green disk, given that an even number is selected. Write your answer as a fraction in simplest form.
There are 4 green on 3,4,5,7
There are 4 blue on 1,2,6,8
Answer by ewatrrr(24785)   (Show Source):
You can put this solution on YOUR website! 1,2,3,4,5,6,7,8 = 4 even numbers
There are 4 green on 3,4,5,7
There are 4 blue on 1,2,6,8
P(A|B) = P(A and B)/P(B)
P(green|even number) = (1/8)/(4/8) = 1/4
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