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in Class XII Maths by Expert (11.3k points)
A bag contains 4 white and 5 black balls. Another bag contains 9 white and 7 black balls. A ball is transferred from the first bag to the second and then a ball is drawn at random from the second bag. Find the probability that the ball drawn is white.

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1 Answer

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by Expert (7.9k points)

Let E1 is the event that ball transferred from the first bag is white and E2 is the event that the ball transferred from the first bag is black .
Also, E is the event that the ball drawn from the second bag is white    

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