If the `p^(t h)` term of an A.P. is `q` and the `q^(t h)` term is `p ,` prove that its `n^(t h)t e r mi s(p+q-n)dot`

Explanation

To prove that the n-th term of an arithmetic progression (A.P.) is \( p + q - n \) given that the p-th term is \( q \) and the q-th term is \( p \), we can follow these steps:

### Step-by-Step Solution:

1. **Define the A.P.**:
Let the first term of the A.P. be \( a \) and the common difference be \( d \).

2. **Express the p-th term**:
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