Neat Etna
I found this (probably very old) puzzle recently, and spent a while solving it while sitting in a doctor's waiting room. Find substitutions of integers (0-9) for letters for the following subtraction problem. There are no repeated digits (e.g. all the values are not all zero).
ANTE
- ETNA
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NEAT
I'll put the solution here, plus my technique for solving it.
Jim on 08.30.07 @ 01:05 AM ET [link]
