由0,1,2,3,4组成可有重复数字的能被3整除的三位数
来源:百度知道 编辑:UC知道 时间:2024/07/03 02:56:50
百位数是1或4时:后面可能是:02,32,23,20,44,14,41,11,(8*2=16种);百位是2时:后面可能是22,04,40,01,10,13,31(7种);百位数是3时,后面可能是:33,24,42,12,21,03,30,00(8种);共有:16+7+8=31种
有102,111,114,120,123,144,201,204,213,222,231,240,243,300,303,312,321,324,330,333,342,402,411,414,420,423,432,441和444