Find the `20^(t h)`term of the series `2xx4+4xx6+6xx8+dotdotdot+n`terms.

Explanation

To find the 20th term of the series \(2 \times 4 + 4 \times 6 + 6 \times 8 + \ldots\) up to \(n\) terms, we can break down the problem step by step.

### Step 1: Identify the Pattern in the Series
The series can be expressed as:
- First term: \(2 \times 4\)
- Second term: \(4 \times 6\)
- Third term: \(6 \times 8\)
- Fourth term: \(8 \times 10\)
...