Bedges/Sandbox – User
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Method: | Method: | ||
*take any 4-digit | *take any 4-digit number | ||
*rearrange those 4 digits | *rearrange those 4 digits | ||
*subtract the smaller number from the larger number | *subtract the smaller number from the larger number | ||
Revision as of 16:34, 19 May 2006
Private Experiment #1
Method:
- take any 4-digit number
- rearrange those 4 digits
- subtract the smaller number from the larger number
- add the resulting 4 digits together
- the result will be 9
Proof:
8419 - 4918 = 3501 3 + 5 + 0 + 1 = 9
7654 - 5746 = 1908 1 + 9 + 0 + 8 = 18 1 + 8 = 9