JEE Main 2022 Mathematics question
Bag I contains 3 red, 4 black and 3 white balls and Bag II contains 2 red, 5 black and 2 white balls. One ball is transferred from Bag I to Bag II and then a ball is draw from Bag II. The ball so drawn is found to be black in colour. Then the probability, that the transferred ball is red, is:
Answer: (2)
Solution
Let A be the event that the ball drawn from Bag II is black and B the event that the transferred ball is red. P(A
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