Consider a bag containing 10 balls of which 4 are black. Now 5 balls are drawn from this bag and put in another bag (without noting the colour of balls). Finally one ball is drawn from the second bag and it is formed to be white. Find the probability that 2 white balls had been drawn in the first draw.

There are two bags. The first bag contains 5 white and 3 black balls and the second bag contains 3 white and 5 black balls. Two balls are drawn at random from the first bag and are put into the second bag without noticing their colours. Then two balls are drawn from the second bag. Find the probability that the balls are white and black.

( for explanation of law of total probability ) there are two bags . The first bag contains 4 white and 5 black balls and the second bag contains 5 white and 4 black balls , two balls are drawn at random from the first bag and are put into the second bag without noticing their colours , then two balls are drawn from the second bag . find the probability that the balls are white and black.

There are two bags. The first bag contain 5 white and 3 black balls and the second bag contains 3 white and 5 black balls. Two balls are drawn at random from the first bag and are put into the second bag without noticing their colours. Then two balls, are drawn from the second bag then the probanility that the balls are one white and one black is -

A bag contains 6 red and 8 black balls and another bag contains 8 red and 6 black balls.A ball is drawn from the first bag and without noticing its colour is put in the second bag.A ball is drawn from the second bag.Find the probability that the ball drawn is red in colour.

A bag contains 6 red and 5 blue balls and another bag contains 5 red and 8 blue balls.A ball is drawn from the first bag and without noticing its colour is put in the second bag.A ball is then drawn from the second bag.Find the probability that the ball drawn is blue in colour.

A bag A contains 2 white and 3 red balls and a bag B contains 4 white and 5red 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.

A bag contain 4 red and 4 black ball.another bag contain 2 red and 6 black ball.One of the two bags is selected at random and a ball is drawn from the bag which is found to be red. Find thye probability that the ball is drawn from the first bag.

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.

A bag contains 4 white,3 red and 5 black balls.One ball is drawn from the bag.What is the probability that it is white?