【GMAT考满分数学PS题库】If a is an integer divisible by 3, and b is not di_真题_答案_解析 GMAT考满分官网

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题目内容

If a is an integer divisible by 3, and b is not divisible by 3, which of the following is NOT divisible by 3?

Aa(b - 3)
Bab + 3
C3(a + b)
D3a + b
Ea + 3b

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正确答案: D

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