If k is an even integer and p and r are odd integers, which of the following CANNOT be all integer?

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问题 If k is an even integer and p and r are odd integers, which of the following CANNOT be all integer?

选项 A、r/k
B、k/p
C、p/r
D、kp/r
E、kr/p

答案A

解析 这道题目只有一个一个选项去排除。对于选项A,分母是偶数,分子是奇数,那么分子不可能整除分母,所以这个数必然不是整数,选择A。
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本试题收录于: GRE QUANTITATIVE题库GRE分类
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