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

In how many ways can 5 people occupy 8 vacant chairs?

In how many ways 4 persons can occupy 10 chairs in a row, if no two sit on adjacent chairs?

In how many ways can 5 persons be seated at a round table?

In how many ways can 5 persons sit in a car, two Including the driver In the front seat and 3 in the back seat. If two particular person out of the 5 are to avoid the driver's seat?

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

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