Find the number of triangles which can be formed by joining the angular points of a polygon of 8 sides as vertices.

How many four letter distinct initials can be formed using the alphabets of English language such that the last of the f…

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

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 ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?

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

How many integers, greater than 999 but not greater than 4000, can be formed with the digits 0, 1, 2, 3 and 4 if repetit…

A committee of 5 members is to be formed out of 3 trainees, 4 professors and 6 research associates. In how many differen…