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If \(n\) is a positive integer, is \(n - 1\) divisible by \(3?\)
(1) \(n^2 + n\) is not divisible by \(6.\)
(2) \(3n = k + 3,\) where \(k\) is a positive multiple of \(3.\)
Answer: A
Source: Manhattan GMAT
(1) \(n^2 + n\) is not divisible by \(6.\)
(2) \(3n = k + 3,\) where \(k\) is a positive multiple of \(3.\)
Answer: A
Source: Manhattan GMAT