If the sum of the first 14 terms of an AP is 1050 and its first term is 10, find the `20^(t h)` term.

Explanation

To solve the problem step by step, we will use the formula for the sum of the first n terms of an arithmetic progression (AP) and the formula for the nth term of an AP.

### Step 1: Write down the formula for the sum of the first n terms of an AP.
The sum of the first n terms (S_n) of an AP can be calculated using the formula:
\[ S_n = \frac{n}{2} \times (2A + (n - 1)D) \]
where:
- \( S_n \) = sum of the first n terms
- \( A \) = first term
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