在20到30这些数中,奇数有?,偶数有?;2的倍数有?,5的倍数有?,;同时是2...答:奇数:21,23,25,27,29 偶数:20,22,24,26,28,30 二的倍数:20,22,24,26,28,30 五的倍数:20,25,30 同时是2和5的倍数:20,30
22,39,,54,92,73,69,56,15,49,52,99,哪些是奇数,哪些是偶数,答:22,39,,54,92,73,69,56,15,49,52,99,哪些是奇数,哪些是偶数,哪些是质数,哪些是合数 解:奇数:39,73,69,15,49,99 偶数:22,54,92,56,52 质数:73 合数:22,39,54,92,69,56,15,49,52,99