Probability Tes...

A word consists of 11 letters in which there are 7 consonants and 4 vowels. If 2 letters are chosen at random, then the probability that all of them are consonants is

Three numbers are chosen at random from 1 to 20. The probability that they are consecutive is

Out of 3n consecutive natural numbers, 3 natural numbers are chosen at random without replacement. The probability that the sum of the chosen numbers is divisible by 3 is

Fifteen persons among whom are A and B, sit down at random at a round table. The probability that there are 4 persons between A and B is

Suppose n ≥ 3 persons are sitting in a row. Two of them are selected at random. The probability that they are not together is

A bag contains 6 red, 4 white and 8 blue balls. If three balls are drawn at random, then the probability that 2 are white and 1 is red is

A committee of five is to be chosen from a group of 9 people. The probability that a certain married couple will either serve together or not at all, is

The letter of the word ‘ASSASSIN’ are written down at random in a row. The probability that no two S occur together is

The probability of getting 4 heads in 8 throws of a coin, is

In a lottery 50 tickets are sold in which 14 are of prize. A man bought 2 tickets, then the probability that the man win the prize is