The sum to infinity of the series
Question:

The sum to infinity of the series $1+\frac{2}{3}+\frac{6}{3^{2}}+\frac{10}{3^{3}}+\frac{14}{3^{4}}+\ldots$ is :-

1. 4

2. 6

3. 2

4. 3

Correct Option: , 4

Solution: