✔ 最佳答案
1111111*1111111=1234567654321
11111111*11111111=123456787654321
because 11*11=121
111*111=12321
1111*1111=1234321
11111*11111=123454321
姐是有n个1*n个1,就是123456....n....654321
1111111有7个1,so my Ans is 1234567654321.
11111111有8个1,so my Ans is 123456787654321