Permutations an...

The number of ways in which three different rings can be worn in four fingers with at most one in each finger, are

A room has 8 doors. In how many ways, a man can enter in the room through one door and exit through a different door?

The total number of ways of answering 5 objective questions, each question having four choices are

In how many ways, a party of 5 men and 5 women be seated at a circular table, so that no two women are adjacent?

The measure of an interior angle of a regular polygon is 140 °. The number of sides and diagonals in this polygon are:

In how many ways can a cricket team of 11 players be chosen out from a squad of 14 players, if 5 particular players are always chosen?

A team of 7 players is to be formed out of 5 under 19 players and 6 senior players. In how many ways, the team can be chosen when at least 4 senior players are included?

Four alphabets A, M, P, O are purchased from a warehouse. How many ordered pairs of initials can be formed using these?

How many words beginning with ‘T ’and ending with ‘E ’can be formed using the letters of the word ”TRIANGLE ”?

In how many ways can 4 red, 3 yellow and 2 green chairs be arranged in a row if the chairs of the same colour are indistinguishable?