A bag contains 3 red, 5 blue and 2 white balls. If one ball is picked at random, what is the probability that it is blue?
A1/5
B5/8
C1/3
D1/2CORRECT
Common EntranceMathematicsProbability
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Why the answer is D, and why the others tempt you.
There are 3 + 5 + 2 = 10 balls and 5 are blue, so the probability is 5/10 = 1/2.
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