奇数：1,3,5,7,9,11,13,15,17,19,21,23,25,27,29偶数：2,4,6,8,10,12,14,16,18,20,22,24,26,28,30质数：2,3,5,7,11,13,17,19,23,29合数：4,6,8,9,10,12,14,15,16,18,20,21,22,24,25,26,28,30