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两个质数的和是偶数对不对

更新时间: 2020-10-30 00:00:00     

两个质数的和是偶数是不对的,两个质数的和不一定是偶数。因为第一个质数是2,2是偶数;除了第一个质数,剩下的质数都是奇数;根据加法性质,偶数加奇数等于奇数;所以两个质数的和不一定是偶数。例如2是质数,3也是质数,加起来是5,不是偶数。

关键词: 质数 偶数 不对

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