Question

n^th 5/1.2 + 7/2.3 x 1/3 + 9/3.4 x 1/3² + 11/4.5 x 1/3³ term of the series

A) \(\cfrac{2n+4}{n(n+1)}\) x \(\cfrac{1}{3^n}\)

B) \(\cfrac{2n+3}{n(n+1)}\) x \(\cfrac{1}{3^{n+1}}\)

C) \(\cfrac{2n+3}{n(n+1)}\) x \(\cfrac{1}{3^n}\)

D) \(\cfrac{2n+3}{n(n+1)}\) x \(\cfrac{1}{3^{n-1}}\)

Answer 1

Correct option is D) \(\cfrac{2n+3}{n(n+1)}\) x \(\cfrac{1}{3^{n-1}}\)