September 3, 2008 11:44 PM Subscribe
MEFIEach letter corresponds to a number 0-9. The solution is unique.
A cryptarithm (or alphametic) is a puzzle in which each digit of an equation is replaced by a different letter. One of the first, and best known, appeared in 1924:
SENDA collection of classic cryptarithms can be found here; some interesting extensions to the concept can be found here. And, if you'd like to make your own, the alphametic generator here and solver here may be of use.
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