1,2,3, 6,7,8,9,10,11,12,13,14,15公倍数?答:7的倍数:7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105...8的倍数:8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120...9的倍数:9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 117, 126, 135...10的倍数:1...