A box contains 5 red and 10 black balls. A ball is drawn at random, its colour is noted and is returned to the box. More over 2 additional balls of the colour drawn are put in the box and then a ball is drawn.what is the probability that the second ball is red.

An urn contains 5 red and 5 black balls. A ball is drawn at random, its colour is noted and is returned to the urn. Moreover, 2 additional balls of the colour drawn are put in the urn and then a ball is drawn at random. What is the probability that the second ball is red?

A bag contains 6 red and 12 green balls. two balls are drawn. What is the probability that one is red and other is green?

An urn contains 4 black. 5 rvhite and 6 red balls. one ball is drawn at random. The probability that it is not black is

A bag contains 8 red and 5 white balls.Three balls are drawn at random.Find the probability that all the three balls are red.

A bag contains 8 red and 5 white balls.Three balls are drawn at random.Find the probability that one ball is red and two balls are white.

A bag contains 8 red and 5 white balls.Three balls are drawn at random. Find the probability that all the three balls are white.

One bag contains 5 white and 3 black balls. Another bag contains 7 white and 8 black balls.A ball is transferred from the first bag to the second and then a ball is drawn from the second. Find the probability that the ball drawn from the second bag is white