In how many ways can 10 persons take seats in a row of 24 fixed seats so that no two persons take consecutive seats.

In how many ways can 6 persons be seated at a round table?

In how many ways can 4 people be seated in a row containing 6 seats?

In how many ways can 5 persons occupy 3 vacant seats?

In how many ways can 10 people take seats in 24 fixed seats so that out of every pair of seats equidistant from the beginning and end at least one seat is empty?

In how many ways can 3 people be seated i a rwo containing 7 seats?

In how many ways can 24 persons be seated round a table,if there are 13 sets?

In how many ways can 24 persons be seated round a table, if there are 13 sets?