Nine people sit around a round table. The number of ways of selecting four of them such that they are not from adjacent seats, is

14 persons are seated at a round table. Find the number of ways of selecting two persons out of them who are not seated adjacent to each other.

10 persons are seated at round table then the number of ways of selecting 3 persons out of them if no two persons are adjacent to each other is

15 persons are sitting around circular table. The number of ways of selectring three persons at a time from them, such that the selected three did not sit together at one place is

12persons are seated at a round table. Number of ways of selecting 2persons not adjacent to each other is

If 30 persons are sitting around a circle. In how many ways can 2 person out of them be selected so that they are not adjacent.

The number of ways can 8 students sit round the table are

There are n numbered seats around a round table. Total number of ways in which n_(1)(n_(1) lt n) persons can sit around the round table, is equal to

There are n numbered seats around a round table. Total number of ways in which n_(1)(n_(1) lt n) persons can sit around the round table, is equal to

There are n numbered seats around a round table. Total number of ways in which n_(1)(n_(1) lt n) persons can sit around the round table, is equal to

There are n numbered seats around a round table. Total number of ways in which n_(1)(n_(1) lt n) persons can sit around the round table, is equal to