求解：100000以内能被9整除且至少包含1个数字9的数共有多少个?不必一一列出请写明解题过程

Question

求解：100000以内 能被9整除 且至少包含1个数字9 的数 共有多少个?
不必一一列出 请写明解题过程

Answer 1

总共4551个,太多了我就不一一列出来,列一点给你看
9,90,99,189,198,279,297,369,396,459,495,549,594,639,693,729,792,819,891,900,909,918,927,936,945,954,963,972,981,990,999,1089,1098,1179,1197,1269,1296,1359,1395,1449,1494,1539,1593,1629,1692,1719,1791,1809,1890,1899,1908,1917,1926,1935,1944,1953,1962,1971,1980,1989,1998,2079,2097,2169,2196,2259,2295,2349,2394,2439,2493,2529,2592,2619,2691,2709,2790,2799,2889,2898,2907,2916,2925,2934,2943,2952,2961,2970,2979,2988,2997,3069,3096,3159,3195,3249,3294,3339,3393,3429,3492,3519,3591,3609,3690,3699,3789,3798,3879,3897,3906,3915,3924,3933