150 Puzzles in Crypt Arithmetic
|Published by: alexa19 (Karma: 4026.30) on 4 August 2010 | Views: 1289|
This is a collection of arithmetical puzzles which operate by substituting letters for numbers. The author clearly explains how to solve them, and they range from easy to very complex.
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|Tags: range, solve, explains, complex, Puzzles, Puzzles, Arithmetic, Crypt, clearly, author