Question
A box contains 6 Brown and 8 Blue caps. There is another
box which contains 8 Brown and 7 Blue caps. One cap is to drawn from either of the two boxes. What is the probability of drawing a Blue caps?Solution
Probability of one box = 1/2 First box blue cap probability = 1/2 × 8/14 Second box blue cap probability = 1/2 × 7/15 Adding both = 1/2 × 8/14 + 1/2 × 7/15 = 109/210
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