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Web Sites in Category Mathematical
CrocoPuzzle - Contains print-out and interactive versions. [English and German.]
Dave's Logic Puzzles - Monthly logic puzzles with solving grids.
IBM Research: Ponder This - Monthly logic and math puzzles set by IBM researchers with solutions.
Jim Loy's Puzzle Page - Classic and original puzzles.
Leisure Ideas: Puzzles - Some mathematical puzzles with answers and/or a hint.
Mathematical Jigsaw Puzzles - Information on polyominos and square puzzles.
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.
Quick Logic Puzzles - Use the clues provided to deduce the correct sequence of numbers in the hidden code.
Tangram Magic Egg - Tangram which creates hundreds of birds including geometry, tasks, solutions and downloads.
TechInterview - Answers to technical interview questions, programming problems, and brain teasers.
The Eternity Puzzle - Article on how this difficult jigsaw puzzle was solved.
The Monty Hall Problem - A probability theory puzzle with solutions. [English and German.]
The Riddles of Oscar - Contains riddles and puzzles with solutions.
The Truth Tree's Math and Logic Board - Collection of math and logic puzzles ranging in levels of difficulty.
The Two-Envelope Paradox: A Complete Analysis? - Describes aspects of a critical problem and apparent paradox in probability theory.
Two Envelope Paradox - Solution - Claims that the two envelope paradox comes from the incorrect use of probabilities.
WU Forums - Discussion board hosted at Berkeley with talk about a variety of solved and unsolved brain teasers.
Related Categories:
Science > Math > Recreations > Games and Puzzles
Editors:
storkey
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