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|Cryptarithms are puzzles in which letters or symbols are substituted for the digits in an arithmetical calculation. If a cryptarithm uses letters in place of digits, and the letters form words or phrases, the puzzle is an alphametic. J. A. H. Hunter coined the term in 1955. With references, Alphametic and Cryptarithms Links, and Cryptarithms Programs.|
|Levels:||Middle School (6-8), High School (9-12), College|
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