Correct Answer - Option 1 : 1/(n + 1)

**Calculation:**

Let the geometric progression be a, ar, ar^{2}, ....

⇒ a = n × (ar + ar^{2} + ......)

⇒ ar + ar^{2} + ........ = ar/1- r (a = n × (ar/1 - r)

⇒ nr = 1 - r

⇒ r = 1/(n + 1)

**∴ The required result will be 1/(n + 1).**