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:3,6,9,12,15,18,21,24,27,30
5的倍数有5,10,15,20,25,30
2和3的倍数有6,12,18,24,30
3和5的倍数有15,30
2、3、5的倍数有:30
温馨提示:答案为网友推荐,仅供参考