Question

There are 5 different boxes and 7 different balls. All the 7 balls are to be distributed among the 5 boxes placed in a row so that any box can receive any number of balls.

Suppose all the balls and all the boxes are identical. Then, in how many ways can all these all be distributed among these boxes so that no box remains empty and no two boxes have the same number of balls?

• A. 1
• B. 4
• C. 12
• D. none of these

Answer 1

The correct option is A 1

There is only one way, which is as follows:
1, 2, 1, 2, 1