An urn contains 6 red, 4 blue, 2 green and 3 yellow marbles. If three marbles are picked up at random, what is the proba…

A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all o…

In a throw of dice what is the probability of getting number greater than 5

If the occurrence of one event means that another cannot happen, then the events are

A box contains 3 white, 4 red and 7 blue erasers. If five erasers are taken at random then the probability that all the …

If a number is chosen at random from the set {1, 2, 3, ......., 100}, then the probability that the chosen number is a p…

A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If three marbles are drawn what is the proba…

A box contains 20 electric bulbs, out of which 4 are defective. Two balls are chosen at random from this box. The probab…