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What is the GCD of the numbers \(3, a,\) and \(12,\) if \(a\) is an integer and \(a \ge 3?\)

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by Gmat_mission » Thu Dec 17, 2020 12:41 pm

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What is the GCD of the numbers \(3, a,\) and \(12,\) if \(a\) is an integer and \(a \ge 3?\)

1. \(a\) is a prime number greater than \(2.\)
2. Both GCD \((3, a)\) and LCM \((3, a)\) are factors of the number \(30.\)

Answer: E

Source: e-GMAT
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