A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is:

Two unbiased coin are tossed .What is the probability of getting at most one head?

There are four hotels in a town. If 3 men check into the hotels in a day then what is the probability that each checks i…

A dice is rolled twice. What is the probability of getting sum 9?

In hypergeometric distribution, the trials are

In which approach to probability the outcomes are equally likely to occur?

An urn contains 2 red, 3 green and 2 blue balls. If 2 balls are drawn at random, find the probability that no ball is bl…

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