A bag contains 5 white and 4 black balls. If 3 balls are drawn at random, find the probability that at least two of them are white.

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.

A bag contains 6 white,4 red and 9 black balls.If three balls are drawn at random,find probability that(i) two of the balls drawn are white (ii) at least one ball drawn is white.

A bag contains 6 white ., 7 red and 5 black balls . Three balls are drawn at random . Find the probability that they will be white .

A bag contains 4 white balls and 2 black balls. Another bag contains 3 white balls and 5 black balls. If one ball is drawn from each bag, find the probability that both are white.

A bag contains 4 white and 5 black balls. A ball is drawn at random from the bag. Find the probability that the ball drawn is white.

From a bag containing 5 white, 3 black and 2 red balls, two balls are drawn at random. Find the probability that both are white.

A bag contains 6 white and 4 black balls.Two balls are drawn at random and one is found to be white.The probability that the other ball is also white is

There are 3 bags each containing 5 white and 3 black balls. Also there are two bags each contains 2 white and 4 black balls. A white ball is drawn at random. Find the probability at the event that white ball is from a bag of the first group.