In how many ways 10 passengers can board three buses if no bus remains empty?

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.

Five balls are to be placed in three boxes in how many diff. ways can be placed the balls so that no balls remain empty if .

Five balls are to be placed in three boxes in how many diff. ways can be placed the balls so that no balls remain empty if .

Five balls are to be placed in three boxes in how many diff. ways can be placed the balls so that no box remain empty if .

Five balls of different color are to be placed in three boxes of different size. Each box can hold all five. In how many different ways can we place the balls so that no box remains empty?

Five balls of different color are to be placed in three boxes of different size. Each box can hold all five. In how many different ways can we placed the balls so that no box remains empty?

Five balls of different color are to be placed in three boxes of different size. Each box can hold all five. In how many different ways can we place the balls so that no box remains empty?

Five balls of different color are to be placed in three boxes of different size. Each box can hold all five. In how many different ways can we placed the balls so that no box remains empty?