AMC 8 2014 Problem 13
AMC8 2014 年第 13 题
奇偶性★★★☆☆
If n and m are integers and n^2+m^2 is even, which of the following is impossible?
若 n 和 m 均为整数，且
- A.n and m are even
- B.n and m are odd
- C.n+m is even
- D.n+m is odd
- E.none of these are impossible
正确答案 · Correct Answer
D
解析 · Solution
解析整理中
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