Sabtu, 6 Oktober 2012 12:45

>Please read and enjoy these fascinating calculations!

>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

> 

> 

>And finally, take a look at this symmetry:

> 

>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