A bag initially contains 1 red and 2 blue balls. An experiment consisting of selecting a ball at random, noting its color and replacing it together with an additional ball of the same colour. If three such trials are made, then

A bag initially contains one red and two blue balls. An experiment consisting of selecting a ball at random, noting its colour and replacing it together with an additional ball of the same colour. If three such trials are made then probability that all the drawn balls are red given that all the drawn balls are of same colour is p then the 10p is equal to

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 8 white and 6 black balls. A ball is drawn at random from the bag, its colour is observed and is kept aside (i.e. not returned in the bag). Three additional balls of the same colour as observed are put in the bag. If now two balls are drawn simultaneously at random from the bag, then the probability that these are of different colours, is ____

A bag contains 4 red and 6 blach balls O balls is drawn at random from the bag,its colour is observed and this ball along with two addibonal balls of the same colour are returnted to the bag,then the probabilaty then the drawn ball is red,is

A bag contains 4 red and 5 black balls, a second bag contain 3 red and 7 black balls. One ball is drawn at random from each bag, find the probability that the ball are of the same colour.

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 ?

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 contains w white and b black balls. A ball is drawn at random and put back in the bag with k additional balls of the same colour. A ball is again drawn at random from the bag. The probability that it is black is

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?