Two drawings each of 3 balls, are made from a bag containing 5 white and 8 black balls, the balls being replaced before the second trial. Find the chance that the first drawing will give 3 white, and the second 3 black balls.

Two drawings, each of 3 balls, are made from a bag containing 5 white balls and 8 black balls, the balls not being replaced before the second trial. Find the probability that the first drawing will give three white, and the second three black balls.

A bag contains 3 white and 5 black balls. A ball is drawn at random. Find the chance that it is a black ball.

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.

from a bag containing 4 red and 2 black balls, two balls are drawn. the probability of getting two black balls is:

A bag contains 6 red, 5 white and 4 black balls. Two balls are drawn. Find the probability that none of them is red.

A bag contains 7 red, 4 white and 5 black balls. If four balls are drawn one by one the replacement, what is the probability that atleast one is white?

Find the chance of drawing 2 white balls in succession from a bag containing 3 red and 5 white balls, the balls drawn first not being replaced.

A bag contains 5 white, 7 red and 8 black balls. If four balls are drawn one by one without replacement, what is the probability that all are white?

A bag contains 3 red balls. 5 black balls and 4 white balls. A ball is drawn at random from the dag. What is the probability that the ball drawn is : white ?