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数学
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一组质数2.13.71的和是86.那么三个指数的何为86的还有几组?
人气:319 ℃ 时间:2020-06-19 11:43:14
解答
质数除2以外都是奇数,三个奇数相加是奇数,不可能等于偶数86,所以2,13,71外为0组
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