A bag has contains 23 balls in which 7 are identical . Then number of ways of selecting 12 balls from bag.

Explanation

To solve the problem of selecting 12 balls from a bag containing 23 balls, where 7 are identical and the remaining 16 are distinct, we can break down the solution into several steps.

### Step-by-Step Solution:

1. **Understanding the Problem**:
We have a total of 23 balls: 7 identical balls and 16 distinct balls. We need to find the number of ways to select 12 balls from this collection.

2. **Identifying Cases**:
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