from a pool of 12 candidates in how many ways can we select president, vice-president, secretary and a treasurer if each of the 12 candidates can hold any office?

A class consists of 40 girls and 60 boys. In how many ways can a president, vice president, treasurer and secretary be chosen i th treasurer must be a girl, the secretary must be a boy and a student may not hold more than one office?

In how many ways can 2 doors be selected from 3 doors ?

In how many ways 2 persons can be selected from 4 persons?

In how many ways 11 players can be selected from 15 cricket players ?

In how many ways can 12 books be divided in 3 students equally?

The math team at East High has 20 members .They want to choose a president , vice president, and treasurer . In how many ways can this be done ?

In how many ways we can select 3 letters of the word PROPORTION?

In how many ways can 3 boys and 3 girls can be selected from 5 boys and 3 girls?

In how many ways can n things be given to p persons, when each person can get any number of things.

In how many ways can 15 members be seated at a round table, if the secretary and vice-president are the neighbours of the president?