An urn contains 5 red and 6 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 ?

An um 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 um and then a ball is drawn at random.What is the probability that the second ball is red?

An urn contains m white and n black balls. A ball is drawn at random and is put back into the urn along with k additional balls of the same colour as that of the ball drawn. A ball is again drawn at random. What is the probability that the ball drawn now is white ?

A bag contains 3 white and 2 red balls. One ball is drawn at random. What is the probability that the ball drawn is red?

A bag contains 30 white and 10 red balls. One ball is drawn at random. What is the probability that the ball drawn is red?

A bag contains 5 white and 7 red balls.One ball is drawn at random.What is the probability that ball drawn is white?

A bag contains 4 red and 6 black balls. A ball is drawn at random from the bag, its colour is observed and this ball along with two additional balls of the same colour are returned to the bag. If now a ball is drawn at random from the bag, If now a ball is drawn at random from the bag, then the probability that this drawn ball is red, is

A bag contains 5 white and 7 red balls. One ball is drawn at random. What is the probability that ball drawn is white?

A bag contains 9 red and 12 white balls. One ball is drawn at random. Find the probability that the ball drawn is red.

An urn contains 10 red and 8white balls.One ball is drawn at random.Find the probability that the ball drawn is white.