在30到50各数中 质数有:【】 合数有:【】 奇数有;l [ ] 偶数有...答:在30到50各数中 质数有:【31,37,41,43,47 】合数有:【30,32,33,34,35,36,38,39,40,42,44,45,46,48,49,50 】奇数有;l [31,33,35,37,39,41,43,45,47,49 ]偶数有:【30,32,34,36,38,40,42,44,46,48,50 】是3的倍数有: 【30,33,36,39,42,45,48 】...
1~30各数中,质数、合数、奇数、偶数、3的倍数、5的倍数、2和3的倍数...答:解:1-30中 质数有:2,3,5,7,11,13,17,19,23,29 合数有:4,6,8,9,10,12,14,15,16,18,20,21,22,24,25,26,27,28,30 奇数有:1,3,5,7,9,11,13,15,17,19,21,23,25,27,29 偶数有:2,4,6,8,10,12,14,16,18,20,22,24,26,28,30 3的倍数有:3,6,9,12,15,18...