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Cryptarithms - Number Puzzles
Cryptarithms are a type of mathematical puzzle in which the digits are replaced by symbols (typically letters of the alphabet). For example:
9567 + 1085 = 10652
can be represented like this:
abcd + efgb = efcbh
The term alphametic is used when the letters form words and phrases. Here's a famous one:
There is also a subset of alphametics called 'doubly-true' where the words are spelt out numbers which also form a valid sum:
Try these other examples.
- Each letter represents a unique digit.
- Numbers must not start with a zero.
- The solution is unique (unless otherwise stated).
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