难怪有人会如此醉心于数学
请看下列有趣的算式
1 x 8 1 = 9
12 x 8 2 = 98
123 x 8 3 = 987
1234 x 8 4 = 9876
12345 x 8 5 = 98765
123456 x 8 6 = 987654
1234567 x 8 7 = 9876543
12345678 x 8 8 = 98765432
123456789 x 8 9 = 987654321
1 x 9 2 = 11
12 x 9 3 = 111
123 x 9 4 = 1111
1234 x 9 5 = 11111
12345 x 9 6 = 111111
123456 x 9 7 = 1111111
1234567 x 9 8 = 11111111
12345678 x 9 9 = 111111111
123456789 x 9 10= 1111111111
9 x 9 7 = 88
98 x 9 6 = 888
987 x 9 5 = 8888
9876 x 9 4 = 88888
98765 x 9 3 = 888888
987654 x 9 2 = 8888888
9876543 x 9 1 = 88888888
98765432 x 9 0 = 888888888
1 x 1 = 1
11 x 11 = 121
111 x 111 = 12321
1111 x 1111 = 1234321
11111 x 11111 = 123454321
111111 x 111111 = 12345654321
1111111 x 1111111 = 1234567654321
11111111 x 11111111 = 123456787654321
111111111 x 111111111 = 12345678987654321
