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 6 red and 4 black balls in a bag. A ball is drawn at random. Find the probability that the ball drawn is red.

There are 6 red and 4 black balls in a bag. A ball is drawn at random. Find the probability that the ball drawn is red.

There are 5 black and 4 red balls ina bag. Two balls are drawn at random. Find the probability that both balls are red.

There are 5 black and 4 red balls ina bag. Two balls are drawn at random. Find the probability that both balls are red.

A bag contains 5 red, 6 white and 7 black balls. Two balls are drawn at random. what is the probability that both balls are red or both are black?

There are 5 black and 6 red balls in a bag. If 3 balls are drawn at random, find the probability that these balls are black.

There are 5 black and 6 red balls in a bag. If 3 balls are drawn at random, find the probability that these balls are black.

There are 5 red, 4 black and 3 blue balls in bag. A ball is drawn at random. Find the probability that the ball drawn is: (i) black (ii) red or black.

There are 5 red, 4 black and 3 blue balls in bag. A ball is drawn at random. Find the probability that the ball drawn is: (i) black (ii) red or black.

A bag contains 4 white and 3 black balls. Two balls are drawn at random. Find the probability that they are of the same colour.