If n is an integer greater than 2, which of the following CANNOT be all even integer?

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问题 If n is an integer greater than 2, which of the following CANNOT be all even integer?

选项 A、n²
B、n(n-1)
C、n-1
D、n+1
E、4＞2+3

答案E

解析 n是大于2的整数，那么当n为偶数时，选项A和B都是偶数；当n为奇数时，选项C和D都为偶数，根据排除法，只有选项E的4n+3，无论n为奇数还是偶数，结果都是(偶数+奇数)=奇数。

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