Suppose we have four boxes A,B,C and D containing coloured marbles as given below : One of the boxes has been selected at random and a single marble is drawn from it. If the marble is red, what is the probability that it was drawn from box A? bo

(for explantion of Baye's rule ) three boxes contain 6 red , 4 black , 5 red , 5 black and 4 red , 6 black balls repectively one of the box is selected at random and a ball is drawn from it . If the ball drawn is red , find probability that it is drawn from the first bag .

An urn contains 3 red and 4 green marbles. If three marbles are picked at random, what is the probability that two are green and one is red?

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 the box III?

An urn contains 4 green , 5 blue ,2 red and 3yellow marbles . If three marbles are drawn at random , what is the probability that none is green ?

A bucket contains 8red,3 blue and 5 green marbles . If 2 marbles are drawn at random, what is the proabability that both are green ?

A box contains 3 blue, 2 white and 4 red marbles. If a marble is drawn at random from the box, what is the probability that it will not be a white marble?

Bag A contains 2 white and 3 red marbles and bag B contains 4 white and 5 red marbles. One marble is drawn at random from one of the bags and is found to be red. The probability that it was drawn from the bag B is

An urn contains 4 green , 5 blue ,2 red and 3yellow marbles . If three marbles are drawn at random , what is the probability that at least one is yellow ?

A bucket contains 8red,3 blue and 5 green marbles . If 3 marbles are drawn at random , what is the probability that none is red ?