If 2 n-1 +2 n+1 = 320, then n value is equals

CA Foundation · Quantitative Aptitude · RTP · September 2026
If 2 n-1 +2 n+1 = 320, then n value is equals
(A) (a) 6
(B) (b) 8
(C) (c) 5
(D) (d) 7

Suggested Answer and Working Notes:

Correct Answer: Option (D)

Correct Option: (d)

Topics: Part-A: Business Mathematics

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