There are 4 white and 4 black in a bag and 3 balls are drawn at random. If balls of same colour are identical, the probability that none of them is black, is

There are 4 white and 6 black balls in a bag. Two balls are drawn at random. Find the probability that both balls drawn are black.

There are 4 white and 6 black balls in a bag. Two balls are drawn at random. Find the probability that both balls drawn are black.

A bag contains 2 white and 3 black balls and another bag contains 4 white and 2 black balls. One bag is selected at random and a ball is drawn from it. Find the probability that the colour of the ball is white.

A bag A contains 2 white and 3 black balls. Another identical bag B contains 3 white and 4 black balls. First a bag, and then a ball from it, are selected at random. If the ball drawn is black, then probability that it is drawn from bag B is

There are 3 bags A,B and C. Bag A contains 2 white and 3 black balls, bag B contains 4 white and 2 balck balls and bag C contains 3 white and 2 black balls. If a ball is drawn at random from a randomly chosen bag, then the probability that the ball drawn is black is

A bag contains 8 red, 6 white and 4 black balls. A ball is drawn at random from the bag. Find the probability that the drawn ball is not black.

A bag contains 4 white balls, 6 red balls, 7 black balls and 3 blue balls. One ball is drawn at random from the bag. Find the probability that the ball drawn is neither white or black.

A bag contains 8 red,6 white and 4 black balls.A ball is drawn at random from the bag. Find the probability that the drawn ball is (i) red or white (ii) not black (iii) neither white nor black.