In the expansion of `(1+x)^n` the binomial coefficients of three consecutive terms are respectively 220, 495 and 792 find the value of `n`.

Explanation

To solve the problem, we need to find the value of \( n \) given the binomial coefficients of three consecutive terms in the expansion of \( (1+x)^n \) are 220, 495, and 792.

### Step-by-Step Solution:

1. **Identify the Terms**:
Let the three consecutive terms be represented as:
- First term: \( \binom{n}{r-1} = 220 \)
- Second term: \( \binom{n}{r} = 495 \)
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