\(3^7[(3^{-4}+3^{-5})+(3^{-5}+3^{-6})+(3^{-6}+3^{-7}) -3^{-7} ]\) is what multiple of \(17?\)

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by M7MBA » Tue Jan 05, 2021 1:18 pm

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\(3^7[(3^{-4}+3^{-5})+(3^{-5}+3^{-6})+(3^{-6}+3^{-7}) -3^{-7} ]\) is what multiple of \(17?\)

A) 1
B) 2
C) 3
D) 4
E) 11

Answer: C

Source: e-GMAT

Source: Beat The GMAT — Problem Solving | Tue Jan 05, 2021 1:18 pm

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