There are two bags. Bag I contains 1 red and 3 white balls, and Bag II contains 3 red and 5 white balls. A bag is selected at random and a ball is drawn from it. Find the probability that the ball so drawn is red in colour.

A bag contains 2 red and 3 white balls and another bag contains 1 red and 2 white balls. If a bag is chosen at random and a ball is drawn from it, what is the probability that the ball is white ?

A bag contains 2 red and 3 White balls and another bag contains 1red and 2 white balls. If a bag choosen at random and a ball is drawn fro ag is from it,what is the probability that the ball is white?

A bag contains 4 red and 3 black balls.A second bag contains 2 red and 4 black balls. One bag is selected at random.From the selected bag; one ball is drawn.Find the probability that the ball drawn is red.

(a) (i) Bag I contains 5 red and 3 black balls, Bag II contains 6 red and 5 black balls. One bag is chosen at random and a ball is drawn which is found to be black. Find the probability that it was drawn from Bag I, (II). (ii) Bag I contains 3 red and 5 white balls and bag II contains 4 red and 6 white balls. One of the bags is selected at random and a ball is drawn from it. The ball is found to be red. Find the probability that ball is drawn from Bag II. (b) Bag I contains 4 black and 6 red balls, bag II contains 7 black and 3 red balls and bag III contains 5 black and 5 red balls. One bag is chosen at random and a ball is drawn from it which is found to be red. Find the probability that it was drawn from bag II.

Given two bags A and B as follows : Bag A 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. The probability that both balls drawn are of the same colour is

Given two bags A and B as follows : Bag A 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. The probability that both balls drawn are of the same colour is

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

Bag A contains "3" white,"7" red balls and Bag B contains "3" white,"2" red balls.One bag is selected at random and a ball is drawn from it.The probability of drawing the ball from the bag A,if the ball drawn is white,is