How many ways can be distributed to the box of (n+1) didferents balls provided that "bo box remains empty".
Let's consider boxes to be "r" and the number of balls needs to be distributed is n
The Formula to calculate the number of ways is written in the Image.
In the given formula, substitute, n as n+1 different balls a mentioned in the question.
Derivation Approach
It's related to the concept of Inclusion - Exclusions of ways
Inclusion-Exclusion Formula is given in the image above.
Thank You!
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