"
> 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
>
> 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=123456789 87654321
=====>>>
111/1+1+1=37
222/2+2+2=37
.
.
.
555/5+5+5=37
.
888/8+8+8=37
999/9+9+9=37
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Saturday, March 20, 2010
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really very help full thank.
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