The number of ways in which 6 X's can be filled in the grid so that no horizontal row of the grid remains empty,

The number of ways in which 5 X's can be placed in the squares of the figure so that no row remains empty is:

The number of ways in which 5X 's can be placed in the squares of the figure so that no row remains empty is:

Find the number of ways in which A A A B B B can be places in the square of fig as shown, so that no row remains empty. fig

Find the number of ways in which A A A B B B can be places in the square of fig as shown, so that no row remains empty. fig

The number of ways in which n distinct balls can be put into three boxes so that no two boxes remain empty is

The number of ways in which n distinct objects can be put into two identical boxes so that no box remains empty, is

Find the number of ways in which four distinct balls can be kept into two identical boxes so that no box remains empty.

Find the number of ways in which four distinct balls can be kept into two identical boxes so that no box remains empty.

Find the number of ways in which n distinct objects can be kept into two identical boxes so that no box remains empty is

Ten identical balls are distributed in 5 different boxes kept in a row and labeled A, B, C, D and E. The number of ways in which the ball can be distributed in the boxes if no two adjacent boxes remains empty