A bag contains `n` balls, one of which is white. The probability that `Aa n dB` speak truth are `P_1a n dP_2,` respectivley. One ball is drawn from the bag and `Aa n dB` both assert that it is white. Find the probability that drawn ball is actually white.

A bag contains n balls, one of which is white. The probability that A and B speak truth are P_(1) and P_(2), respectively. One ball is drwn from the bag and A and B both assert that it is white. Find the probability that drawn ball is actually white.

A bag contain n ball out of which some balls are white. If probability that a bag contains exactly i white ball is proportional to i^2 . A ball is drawn at random from the bag and found to be white, then find the probability that bag contains exactly 2 white balls.

A bag contain n ball out of which some balls are white. If probability that a bag contains exactly i white ball is pro0portional to i^2dot A ball is drawn at random from the bag and found to be white, then find the probability that bag contains exactly 2 white balls.

A bag contains 4 balls. Two balls are drawn at random, and are found to be white. What is the probability that all balls are white?

A bag contains 4 balls. Two balls are drawn at random, and are found to be white. What is the probability that all balls are white?

There are 5 white and 4 red balls in a bag. Two balls are drawn at random. Find the probability that both balls are white.

A bag A contains 2 white and 3 red balls and a bag B contains 4 white and 5 red and balls. One ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn as red.

A bag contains 1 white and 6 red balls, and a second bag contains 4 white and 3 red balls. One of the bags is picked up at random and a ball is randomly drawn from it, and is found to be white in colour. Find the probability that the drawn ball was from the first bag.

A bag contains 3 white, 5 black and 2 red balls, all of the same shape and size. A ball is drawn from the bag without looking into it, find the probability that the ball drawn is : (iii) a white ball.

A bag contains 5 balls. Two balls are drawn and are found to be white. What is the probability that all the balls are white?