If n is an odd integer, which one of the following is an even integer?A、n * nB、

游客2023-10-17 66

问题 If n is an odd integer, which one of the following is an even integer?

选项 A、n * n
B、n/4
C、2n+3
D、n*（n+3）

答案 D

解析题目问如果n是奇数，下列哪个数是偶数?如果n是一个奇数，那么（n +3）就是一个偶数，它们的乘积n*（n+3）一定是一个偶数。

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