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题库 / GMATAdvanced-PS-61
Which of the following describes the set of all possible values of the positive integer k such that, for each positive odd integer n, the value of ~$n \over k$~ is midway between consecutive integers?
All positive integers greater than 2
All prime numbers
All positive even integers
All even prime numbers
All positive even multiples of 5
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错误点：之前从没见过这个说法：midway between consecutive integers，以为是连续整数的中位数（median）。下次碰到记住就行，midway就是0.5——所以原句的意思就是使奇数n除以k=1.5/2.5/3.5/4.5....——即k=2——答案中乍一看没有这个选项，一个个往下读就能找到D
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