There are three identical bags. First bag contains 8 red and 2 black balls, second bag contains 6 red and 4 black balls, and 3rd bag contains 7 red and 3 blackballs. A bag is selected at random and the ball is drawn from the selected bag.
Find the probability of drawing a black ball.
2.If the drawn ball is black, what is the probability that it has come from the second bag
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A bag contains 4 red and 3 black balls. A second bag contains 2 red and 3 black balls. One bag is selected at random. If from the selected bag one ball is drawn, then what is the probability that the ball drawn is red?
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1. probability of black ball = 9/29
2. 1/3
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