Three letters can be posted in five letter boxes in `3^(5)` ways.

Three letters can be posted in five letter boxes in 3^(8) ways.

Three letters can be posted in five letter boxes in 3^(8) ways.

5 letters can be posted into 3 letter boxes in:

5 letters can be posted into 3 letter boxes in:

The number of ways in which 10 letters can be posted in five letter boxes is

The number of ways in which 10 letters can be posted in 5 letter boxes is

The number of ways in which 5 letters can be posted in 10 letter boxes is

6 letters are to be posted in three letter boxes. The number of ways of posting the letter when no letter box remains empty is

In how many ways 5 letters can be posted in 4 letter boxes?