Three gentlemen and three ladies are candidates for two vacancies. A voter has to vote for two candidates. In how many w…

Ten coins are tossed simultaneously. In how many of the outcomes will the third coin turn up a head?

A selection committee is to be chosen consisting of 5 ex-technicians. Now there are 12 representatives from four zones. …

In how many different ways can the letters of the word ‘TRANSPIRATION’ be arranged so that the vowels always…

In how many ways can 3 men and their wives be made stand in a line such that none of the 3 men stand in a position that …

In how many different ways can the letters of the word ABSENTEE be arranged?

What is the value of 1 × 1! + 2 × 2! + 3 × 3! + . . . . . . . . n × n!<br /> where n! mea…

There are 10 seats around a circular table. If 8 men and 2 women have to seated around a circular table, such that no tw…