What are alphametics?
- Identical digits are replaced by the same letter. Different digits are replaced by different letters.
- After replacing all the letters with digits, the resulting arithmetic expression must be mathematically correct.
- Numbers cannot start with 0. For example, the number 0900 is illegal.
- Each problem must have exactly one solution, unless stated otherwise (unlike the “Hindu” problems where there might be no solution or multiple solutions).
- The problems will be in base 10 unless otherwise specified. This means that the letters replace some or all of the 10 digits – 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
Maths Puzzles: Cryptarithms, Symbologies and Secret Codes
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