A bag contrains 4 white and 5 black blls. Another bag contains 9 white and 7 black balls. A ball is
Channel: Doubtnut
Date: 2020-01-19

A bag contrains 4 white and 5 black blls. 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.