11*10*9/3/2=165个组合
123,124,125,126,127,128,129,1210,1211
134,135,136,137,138,139,1310,1311
145,146,147,148,149,1410,1411
156,157,158,159,1510,1511
167,168,169,1610,1611
178,179,1710,1711
189,1810,1811
1910,1911
11011
234,235,236,237,238,239,2310,2311
245,246,247,248,249,2410,2411
...
289,2810,2811
2910,2911
21011
.
8910,8911
81011
91011
这里面没有165个组合吧?还是你没全部写出来,要不你教我下一啊我等下给你加分好吗