Prove that the sum of nth term from the beginning and nth term from the end of an A.P. is· constant.

Explanation

To prove that the sum of the nth term from the beginning and the nth term from the end of an Arithmetic Progression (A.P.) is constant, we can follow these steps:

### Step-by-Step Solution:

1. **Define the Arithmetic Progression (A.P.):**
Let the first term of the A.P. be \( A \) and the common difference be \( D \). The terms of the A.P. can be expressed as:
\[
A, A + D, A + 2D, \ldots, A + (m-1)D
...