The sum of the digits of $[(10^x)^y]-64=279.$ What is the value of $xy?$

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by M7MBA » Thu Jul 22, 2021 7:42 am

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The sum of the digits of $[(10^x)^y]-64=279.$ What is the value of $xy?$

A. 28
B. 29
C. 30
D. 31
E. 32

Answer: E

Source: Veritas Prep

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Source: Beat The GMAT — Problem Solving | Thu Jul 22, 2021 7:42 am

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