A box `B_1`, contains 1 white ball, 3 red balls and 2 black balls. Another box `B_2`, contains 2 white balls, 3 red balls and 4 black balls. A third box `B_3`, contains 3 white balls, 4 red balls and 5 black balls.

A box B_(1) contains 1 white ball, 3 red balls, and 2 black balls. An- other box B_(2) contains 2 white balls, 3 red balls. A third box B_(3) contains 3 white balls, 4 red balls, and 5 black balls. If 2 balls are drawn (without replecement) from a randomly selected box and one of the balls is white and the other ball is red the probability that these 2 balls are drawn from box B_(2) is

A box B_(1) contains 1 white ball, 3 red balls, and 2 black balls. An- other box B_(2) contains 2 white balls, 3 red balls. A third box B_(3) contains 3 white balls, 4 red balls, and 5 black balls. If 1 ball is drawn from each of the boxes B_(1),B_(2) and B_(3), the probability that all 3 drawn balls are of the same color is

A box X contains 1 white ball, 3 red balls and 2 black balls. Another box Y contains 2 white balls, 3 red balls and 4 black balls. If one ball is drawn from each of the two boxes, then the probability the balls are of different colours is

A box 'A' contains 2 white, 3 red and 2 black balls. Another box 'B' contains 4 white, 2 red and 3 black balls. If two balls are drawn at random, without replacement, from a randomly selected box and one ball turns out to be white while the other ball turns out to be red, then the probability that both balls are drawn from box 'B' is :

A bag A contains 3 white and 2 black balls and another bag B contains 2 white and 4 black balls. From a bag a ball is picked at random. The probability that the ball is black, is

A bag contians 4 white and 2 black balls and another bag contain 3 white and 5 black balls. If one ball is drawn from each bag, then the probability that one ball is white and one ball is black is