Bag A contains 5 white and 2 black balls. Bag B

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Bag A contains 5 white and 2 black balls. Bag B

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03-22-2008, 12:28 PM

Margaret

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Join Date: Feb 2008

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Bag A contains 5 white and 2 black balls. Bag B

Bag A contains 5 white and 2 black balls. Bag B contains 2 white and 3 black balls. If any one bag is chosen and a ball is taken out of it at random, what is the probability that the ball is black?

(a) 31/70
(b) 1/2
(c) 5/12
(d) 3/5

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