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GeezerVison is showing mathworld.wolfram.com — Cryptarithmetic -- from Wolfram MathWorld 
CryptarithmeticA number puzzle in which a group of arithmetical operations has some or all of its digits replaced by letters or symbols, and where the original digits must be found. In such a puzzle, each letter represents a unique digit. See alsoAlphametic, Digimetic, Skeleton DivisionExplore with Wolfram|Alpha
More things to try: ReferencesBogomolny, A. "Cryptarithms." https://www.cut-the-knot.org/cryptarithms/intro_crypto.shtml.Brooke, M. One Hundred & Fifty Puzzles in Crypt-Arithmetic. New York: Dover, 1963.Kraitchik, M. "Cryptarithmetic." §3.11 in Mathematical Recreations. New York: W. W. Norton, pp. 79-83, 1942.Marks, R. W. The New Mathematics Dictionary and Handbook. New York: Bantam Books, 1964.Referenced on Wolfram|AlphaCryptarithmeticCite this as:Weisstein, Eric W. "Cryptarithmetic." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Cryptarithmetic.html Subject classifications |
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