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 box contains 7 white and 5 black balls two are drawn at random find the probability that they are not of the same colour when the balls are drawn at a time

A box contains 7 white and 5 black balls three are drawn at random find the probability that they are not of the same colour when one by one without replacement.

A bag contain n white and n black balls, all of equal size. Balls are drawn at random. Find the probability that there are both white and black balls in the draw and that the number of white balls is greater than that of black balls by 1.

A bag contains 3 red, 7 white, and 4 black balls. If three balls are drawn from the bag, then find the probability that all of them are of the same color.

An urn contains 9 red, 7 white, and 4 black balls if two balls are drawn at random the probability that both the balls are red is

A bag contains 7 red and 5 white balls. 4 balls are drawn ar random. What is the probability that (i) all of them are red (ii) two of them would be red and two white?

A bag contains 5 white and 3 black balls and 4 balls are successively drawn out and not replaced. The probability that they are alternately of different colours is -

A box contains 6 white balls and 4 black balls, A ball is drawn at random from the box. What is the probability that the ball is white.

An urn contains 8 red and 5 white balls. Three balls are drawn at random. Then the probability that balls of both colours are drawn is-

A bag contains 6 red and 4 balls. Two balls are drawn at random one after the other.Find the probability that both the drawn balls are white, when (i) the first drawn ball is not replaced before the second drawing, (ii) the first drawn ball is replaced before the second drawing.