Find the chance of drawing 2 white balls in succession from a bag containing 5 red and 7 white balls, the ball first drawn not being replaced.

In how many ways can 5 red and 4 white balls be drawn from a bag containing 10 red and 8 white balls

There are 5 red and 7 white balls in one bag and 3 red and 8 white balls in second bg. If a ball is drawn at random from one the bags, find the probability that it is red.

A bag contains 6 black and 3 white balls. Another bag contains 5 black and 4 white balls. If one ball is drawn from each bag, find the probability that these tow balls are of the same colour.

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

Bag 4 contains 3 red and 2 white balls, and Bag B contains 2 red and 5 white balls. A bag is selected at random, a ball is drawn and put into the other bag, then a ball is drawn from the second bag. Find the probability that both balls drawn are of the same colour.

A bag A contains 2 white and 3 red balls and a bag B contains 4 white and 5 red and balls. One ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn as red.

Bag A contains three red and four white Balls , bag B contains two red and three white Balls. If one Ball is drawn from bag A and two Balls from bag B find the probability that : One Ball is red and two Balls are white .

A fair die is rolled. If a face 1 turns up, a ball is drawn from Bag A. If face 2 or 3 turns up a ball is drawn from Bag B. If face 4 or 5 or 6 turns up, a ball is drawn from Bag C. A contain 3 red and 2 white balls, Bag B contains 3 red and 4 white balls and Bag C contains 4 red and 5 white balls. The die is rolled, a Bag is picked up and a ball is drawn. If the drawn ball is red, what is the probability that it is drawn from Bag B?

A bag contains 9 red and 12 white balls one ball is drawn at random. Find the probability that the ball drawn is red.

There are two bags . One bag contains 3 white balls and 2 black balls . The other box contains 7 white and 3 balck balls , If a bag is selected at random and from it , then a ball is drawn then the probability that the ball is black is .