Q36:
If a and b are positive integers such that a-b and a/b are both even integers, which of the following must be an odd integer?
A. a/2
B.b/2
C. (a+b)/2
D. (a+2)/2
E. (b+2)/2
根据题目给的前提,可以推得a, b都是偶数。那么D和E都势必是奇数了,不知道这样的推理有没有错?答案是D,想不通为何E不对...
谢谢!
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