The number of ways of arranging 20 boys so that 3 particular boys are separated is:

The number of ways of arranging 18 boys such that 3 particular boys are always separate is equal to

Let N denote the number of ways in which n boys can be arranged in a line so that 3 particular boys are seperated then N is equal to

Let N denote the number of ways in which n boys can be arranged in a line so that 3 particular boys are seperated then N is equal to

The number of ways of arranging 8 boys and 8 girls in a row so that boys and girsl sit alternately is

Find the number of ways of arranging 4 boys and 3 girls around a circle so that all the girls sit together.

Find the number of ways of arranging 5 boys and 5 girls around a circle ?

Find the number of ways of arranging 5 boys and 5 girls around a circle.