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If \(a\) is a positive integer, is \(a^2\) a multiple of \(8?\)
(1) \(a^3\) is a multiple of \(16.\)
(2) \((a+4)^2\) is a multiple of \(8.\)
Answer: D
Source: Manhattan GMAT
(1) \(a^3\) is a multiple of \(16.\)
(2) \((a+4)^2\) is a multiple of \(8.\)
Answer: D
Source: Manhattan GMAT
