The sum of the first eight terms of a G.P. is five times the sum of the first four terms; then the common ratio is -

CA Foundation · Quantitative Aptitude · MTP · May 2026
The sum of the first eight terms of a G.P. is five times the sum of the first four terms; then the common ratio is -
(A) A. √2
(B) B. -√2
(C) C. ±√2
(D) D. None of these

Suggested Answer and Working Notes:

Correct Answer: Option (C)

C. ±√2

Topics: Part-A: Business Mathematics

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