Mathematical (Brain Teasers)

Mathematical Sites:

The Monty Hall Problem The Monty Hall Problem: A probability theory puzzle with solutions. [English and German.] (Mathematical) http://www.remote.org/frederik/projects/ziege/ Quick Logic Puzzles Quick Logic Puzzles: Use the clues provided to deduce the correct sequence of numbers in the hidden code. (Mathematical) http://www.robertwilliams.org/qlp/index.html Monty Hall Game Monty Hall Game: JavaScript example of the Monty Hall Game. This game demonstrates the real (empirical) affect of statistics. [Does not display correctly in all browsers.] (Mathematical) http://montyhallgame.shawnolson.net/ The Truth Tree's Math and Logic Board The Truth Tree's Math and Logic Board: Collection of math and logic puzzles ranging in levels of difficulty. (Mathematical) http://www.truthtree.com/mathdoor.html CrocoPuzzle CrocoPuzzle: Contains print-out and interactive versions. [English and German.] (Mathematical) http://www.croco-puzzle.com/en/ TechInterview TechInterview: Answers to technical interview questions, programming problems, and brain teasers. (Mathematical) http://www.techinterview.org/ IBM Research: Ponder This IBM Research: Ponder This: Monthly logic and math puzzles set by IBM researchers with solutions. (Mathematical) http://www.research.ibm.com/ponder/ Perplexus 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. (Mathematical) http://perplexus.info/ Dave's Logic Puzzles Dave's Logic Puzzles: Monthly logic puzzles with solving grids. (Mathematical) http://members.aol.com/dfcurran/logic/logicpuz.html Leisure Ideas: Logic Puzzles Leisure Ideas: Logic Puzzles: Some mathematical puzzles with answers and/or a hint. (Mathematical) http://www.leisureideas.com/logic%20puzzles.htm The Puzzles of Oscar The Puzzles of Oscar: Contains puzzles and games with solutions. (Mathematical) http://uk.geocities.com/oscarlagioia/riddles.html CellFighter CellFighter: Shareware game based around an extension of the game of life. (Mathematical) http://www.cellfighter.com/conways-life-download.html Jim Loy's Puzzle Page Jim Loy's Puzzle Page: Classic and original puzzles. (Mathematical) http://www.jimloy.com/puzz/puzz.htm WU Forums WU Forums: Discussion board hosted at Berkeley with talk about a variety of solved and unsolved brain teasers. (Mathematical) http://www.ocf.berkeley.edu/~wwu/cgi-bin/yabb/YaBB.cgi?board=riddles_hard The Two-Envelope Paradox: A Complete Analysis? The Two-Envelope Paradox: A Complete Analysis?: Describes aspects of a critical problem and apparent paradox in probability theory. (Mathematical) http://jamaica.u.arizona.edu/~chalmers/papers/envelope.html Tangram Magic Egg Tangram Magic Egg: Tangram which creates hundreds of birds including geometry, tasks, solutions and downloads. (Mathematical) http://michael.bischoff.bei.t-online.de/index%20uk.htm Two Envelope Paradox - Solution Two Envelope Paradox - Solution: Claims that the two envelope paradox comes from the incorrect use of probabilities. (Mathematical) http://www.anc.ed.ac.uk/~amos/doubleswapsoln.html Mathematical Jigsaw Puzzles Mathematical Jigsaw Puzzles: Information on polyominos and square puzzles. (Mathematical) http://home.hetnet.nl/~paslen/jigsawpuzzles.html The Eternity Puzzle The Eternity Puzzle: Article on how this difficult jigsaw puzzle was solved. (Mathematical) http://www.eternity-puzzle.co.uk/news.htm Leisure Ideas: Puzzles Leisure Ideas: Puzzles: Some mathematical puzzles with answers and/or a hint. (Mathematical) http://www.leisureideas.com/puzzles.htm