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Problematics | Think of three numbers

A number of puzzles that have appeared in Problematics over the last three-and-a-half years have involved a magician playing tricks on a gullible audience, sometimes with cards, sometimes with matches ...
A number of puzzles that have appeared in Problematics over the last three-and-a-half years have involved a magician playing tricks on a gullible audience, sometimes with cards, sometimes with matches ...