what is the math formula(algorithm) for flipping any number like:

47->74

1655 -> 5561

12345->54321

1190 -> 911

??

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- December 8th 2008, 12:42 PMtransgalacticflipping number question..
what is the math formula(algorithm) for flipping any number like:

47->74

1655 -> 5561

12345->54321

1190 -> 911

?? - December 8th 2008, 01:45 PMMentia
add up the individual digits. multiply by 11. subtract the original #.

for instance:

x = 23

2 + 3 = 5

5* 11 = 55

55 - 23 = 32 - December 9th 2008, 09:50 AMBruce