Distribution of n distinct object in r different boxes (empty box not allowed)

Distribution of n distinct object in r different boxes (empty box allowed)

Distribution of n identical object in r different boxes if empty boxes are allowed

Distribution of n identical object in r different boxes if empty boxes are not allowed

Distribution of n distinct objects into r distinct boxes if in each box at least one box is placed

How many ways n distinct objects be placed in 2 different boxes so that no box remains empty?

Find the total number of ways in which n distinct objects can be put into two different boxes so that no box remains empty.

Find the total number of ways in which n distinct objects can be put into two different boxes so that no box remains empty.

The number of ways of distributing 7 different balls into 5 different boxes.So that no box is empty and order of putting the balls in the boxes is considered is 15n. The value of n is

The number of ways of distributing 12 identical balls in 5 different boxes so that none of the box is empty is