Coloured balls are distributed in three bags as shown in the following table:
A bag is selected at random and then two balls are randomly drawn from the selected bag. They happen to be black and red. Find the probability that they come from bag I?

Coloured balls are distributed in four boxes as shown in the following table: A box is selected at random and then a ball is randomly drawn from the selected box. The colour of the ball is black. What is the probability that ball drawn is from box III?

Coloured balls are distributed in four boxes as shown in the following table: A box is selected at random and then a box is randomly drawn from the selected box. The colour of the ball is black, what is the probability that ball is drawn from the box III?

Three bags contains a balls as shown in the following table: A bag is selected at random and two balls are drawn. They happen to the white and red. What is the probability that they come from the third bag.

Coloured balls are distributed in four boxes as shown in the figure A box is selected at random and then a ball is randomly drawn from the selected box. The colour of the ball is black, what is the probability that ball drawn is from the box III?

Three bags contain balls as shown in the table below: A bag is chosen at random and two balls are drawn from it. They happen to be white and red. What is the probability that they come from the III bag?

Three bags contain balls as shown in the table below : A bag is chosen at random and two balls are drawn from it. They happen to be white and red. What is the probability that they came from the Ill bag ?

The contents of three bags A, B and C are as follows: Bag A: 1 white, 2 black and 3 red balls, Bag B: 2 white, 1 black and 1 red balls. Bag C: 4 white, 5 black and 3 red balls. A bag is selected at random. Two balls are drawn from the selected bag. if these found to be white and red, find the probability that they have been drawn from bag A.

The contents of three bags A, B and C are as follows: Bag A: 1 white, 2 black and 3 red balls, Bag B: 2 white, 1 black and 1 red balls. Bag C: 4 white, 5 black and 3 red balls. A bag is selected at random. Two balls are drawn from the selected bag. if these found to be white and red, find the probability that they have been drawn from bag B.