29/09/2009, 01:01
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
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
987654321 - 123456789 = 864197532
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
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
987654321 - 123456789 = 864197532