Question

The common ratio of G.P. 1 – 1/3+ 1/9 - 1/27……………. is

A) -3 

B) -1/3

C) 3 

D) 1/3

Answer 1

Correct option is (B) -1/3

Common ratio \(=\frac{a_2}{a_1}\)

\(=\frac{\frac{-1}3}1=\frac{-1}3\)

Answer 2

Correct option is B) -1/3