The sum of first 7 terms of an A.P. is 10 and that of next 7 terms is 17. Find the progression.

Explanation

To solve the problem, we need to find the arithmetic progression (A.P.) given that the sum of the first 7 terms is 10 and the sum of the next 7 terms is 17.

### Step-by-Step Solution:

1. **Understanding the Problem**:
We know that the sum of the first 7 terms of an A.P. is given by:
\[
S_n = \frac{n}{2} [2a + (n-1)d]
...