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perplexus.info :: logic puzzles, brainteasers, riddles and math tricks
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Perplexus.info has 1 URLs listed in 1 Dmoz categories.
Perplexus
A forum and collection of brain teasers, logic problems, math problems, paradoxes, science games, probability, riddles, and geometric shapes. The puzzles are searchable and categorized, most have solutions.
http://perplexus.info/
Top/Games/Puzzles/Brain_Teasers/Mathematical
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