BCIT Mathematical Entertainment (Popularity:  )
Famous mathematical problems, puzzles, facts, games and trivia.
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Math Puzzles (Popularity: )
Logic puzzles and riddles with some solutions.
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Alien Tiles (Popularity: )
Object of puzzle is to try to get color pieces to create certain patterns in cube.
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Alphametic Puzzles (Popularity: )
Numerous puzzles, links, puzzle solver, and a generator.
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Scott Kim (Popularity: )
Puzzles for web, computers, and print; ambigrams.
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Sequence Puzzles and Problems (Popularity: )
With links to related sites. Compiled by Torsten Sillke.
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Contest Center Cryptarithms (Popularity: )
Examples of cryptarithms, with prize competitions for subscribers.
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Alphametics and Cryptarithms (Popularity: )
Puzzles in which letters or symbols are substituted for the digits in an arithmetical operation like addition.
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Alphametics Page (Popularity: )
Compiled by Mike Keith. Examples of various genres.
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Logic Puzzles (Popularity: )
Collection of original numerical-logic puzzles. Many are long and difficult, involve sorting and comparing long lists and are intended to ...
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A Primer on Cryptarithmetic (Popularity: )
Instructions, examples, references and links.
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Ken Duisenberg's Puzzle of the Week Archives (Popularity: )
Challenging puzzles and problems.
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Mathpuzzle.com (Popularity: )
Celebrates math puzzles and mathematical recreations.
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Algebraic Math Puzzles (Popularity: )
A collection of puzzles at high school level. Does not include answers.
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Group Games (Popularity: )
Animations that develop the theory behind such puzzles as the Rubik cube.
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Free Puzzle Collections (Popularity: )
Educational and recreational puzzles for teachers, students and parents. Each puzzle is graded by difficulty and has a hint. Solutions ...
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Aha! Puzzles (Popularity: )
Puzzles, books, games and tests with designed by Lloyd King, author of "Test Your Creative Thinking".
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Storkey: Two Envelope Paradox (Popularity: )
A tough but simply defined problem which demonstrates key issues in probability.
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Mathproblems.info (Popularity: )
Over one hundred and fifty math problems ranging from basic math to differential equations.
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Baylor Problem of the Month (Popularity: )
Monthly problems with archive and results.
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