In how many ways 5 persons can be seated in a row ?

In how many ways 4 persons can be arranged in 3 rows with out any restriction. If each row can accommodate any number of persons.

In how many ways five persons can stand in a row ?

In how many ways five persons can stand in a row ?

In how many ways five persons can stand in a row ?

There are 3 rows containing 2 seats in each row. In how many ways 3 persons can be seated such that no row remains empty.

In how many ways can seven person be seat in a row of seats if two persons insist on sitting next to each other?

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