Aptitude | Progressions | Question 8

Find the sum of series: 1/3, 1/9, 1/27, 1/81……………..
(A) 1/2
(B) 1/3
(C) 1/4
(D) 1/6


Answer: (A)

Explanation: Sn=a/(1-r)
= (1/3)/(1-1/3)
=1/2


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