The number of ways of arranging 9 persons around a circle if there are two other persons between two particular persons is:

The number of ways of arranging 7 persons around a circle is

Find the number of ways of arranging 7 persons around a circle.

Find the number of ways to arrange 8 persons around a circle by taking 4 at a time.

There are fifty persons among whom 2 are brothers. The number of ways they can be arranged in a circle, if there is exactly one person between the two brothers, is

There are fifty persons among whom 2 are brothers. The number of ways they can be arranged in a circle, if there is exactly one person between the two brothers, is

Find the number of ways to arrange 8 persons around circular table id two specified persons wish to sit together

There are 20 persons among whom are two brothers. The number of ways in which we can arrange them around a circle so that there is exactly one person between the two brothers, is