Bag I contains 2 white, 1 black and 3 red balls, Bag II contains 3 white, 2 black and 4 red balls, Bag III contains 4 white, 3 black and 2 red balls. A bag is chosen at random and two balls are drawn from it. They happen to be one black and one red. What is the probability that they come from bag II ?

(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.

A bag A contains 2 white and 3 red balls another bag B contains 4 white and 5 red balls.A bag is chosen at random and a ball is drawn from it.If the ball drawn is red,what is the probability that the bag B is chosen? [CBSE'04C)

One bag contains 3 white and 2 black balls, another bag contains 5 white and 3 black balls. If a bag is chosen at random and a ball is drawn from it, what is the chance that it is white?

A bag contains 3 white balls and 2 black balls, another contains 5 white and 3 black balls, if a bag is chosen at random and a ball is drawn from it. What is the probability that it is white ?

The contents of three bags, I, II and III are s follows: Bag I:1 white, 2 back and 3 red balls Bag II: 2 white, 1 black and 1 red ball; Bag III: 4 white, 5 black and 3 red balls, A bag is chosen at random and two balls are drawn. what is the probability that the balls are white and red?

Bag l 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 the black. Find the probability it was drawn from bag I.

Bag l 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 the black. Find the probability it was drawn from bag.

A bag contains 5 white,7 black and 4 red balls.Then the chance that three balls drawn at random are all white is