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44. Math Puzzles Please email us your comments and new puzzles cherk@math.utah.edu. Enjoy! Andrej and Elena. 1. Coins. There are 12 coins. More problems from Vlad Mitlin. Party! http://www.math.utah.edu/~cherk/puzzles.html

Math puzzles Andrej's homepage Elena's homepage These puzzles do not require any mathematical knowledge, just logical reasoning. Check, how smart you are. If you cannot solve them, take it easy. Almost all puzzles were told to us by a computer/math genius Vlad Mitlin . Visit us again: we intend to place here new puzzles and the solutions. Please email us your comments and new puzzles: cherk@math.utah.edu. Enjoy! Andrej and Elena 1. Coins There are 12 coins. One of them is false; it weights differently. It is not known, if the false coin is heavier or lighter than the right coins. How to find the false coin by three weighs on a simple scale? Solution: Click here 2. Bridge crossing This problem was recently published in MAA on line: Crossing a Rickety Bridge at Night By Flashlight. A group of four people has to cross a bridge. It is dark, and they have to light the path with a flashlight. No more than two people can cross the bridge simultaneously, and the group has only one flashlight. It takes different time for the people in the group to cross the bridge: A nnie crosses the bridge in 1 minute

45. LookSmart - Directory - Math Puzzles Interactive mathematics Miscellany puzzles Learn about math or polish rusty logic skills with these puzzles and word problems. http://search.looksmart.com/p/browse/us1/us317914/us328800/us281829/

@import url(/css/us/style.css); @import url(/css/us/searchResult1.css); Home IN the directory this category YOU ARE HERE Home Sciences Mathematics Math Puzzles - Take your pick from the dozens of web-based math puzzles offered. Directory Categories Average Speed Puzzles Bridges of Koenigsburg Cryptarithms Knight's Tour ... More Puzzles Directory Listings About Bradley University - Problem of the Week Designed for undergraduates in math, these puzzles offer mathematical challenges. Brain Teasers Fun math puzzles designed to sharpen children's problem-solving skills. Sorted for different ages. Gunno Tornberg - Knight's Tour Learn how to move a knight around a chess board so that it visits every square using Warnsdorff's rule. Learn about math or polish rusty logic skills with these puzzles and word problems. Mathpuzzle Interconnections Try your hand at math puzzles at "mathematical recreations" at Ed Pegg's site. Extensive list of links to puzzle sites. Numericana - Recreational Mathematics Explore this list of mathematical puzzles, problems, and brainteasers. Includes some discussion. Syvum - Brain Teasers and Puzzles Contains an extensive collection of interactive brain teasers and math quizzes with immediate scoring tools. Highlights its IQ test.

46. WEB FEET PRINT Sample Page: Math Puzzles K–12 math problems, puzzles, Tips Tricks http//forum.swarthmore.edu/k12/mathtips/ From the math Forum at Swarthmore College, this is an excellent http://www.webfeetguides.com/webfeet/wfsamp/mathpuz.htm

WEB FEET PRINT Sample Page: Math Puzzles Cloning Dinosaurs Harlem Renaissance Picasso return to What is WEB FEET? Clever Games for Clever People http://www.cs.uidaho.edu/~casey931/conway/games.html Interactive Mathematics Miscellany and Puzzles http://www.cut-the-knot.com/ Fascinating problems are accompanied by full, friendly discussions. Categories include Games and Puzzles, Arithmetic/Algebra, Geometry, Probability, Eye Opener, Analog Gadgets, Things Impossible, Math as Language, and more. The Eye Opener section features Java applets that illustrate and thus help to solve or prove various math problems. Things Impossible discusses unsolvable problems. Most sections give references and links to more information on the Web. An exciting site full of information and activities for high school students and their teachers. http://forum.swarthmore.edu/k12/mathtips/ Math Archive http://bsuvc.bsu.edu/~d004ucslabs/ RockHill Communications 2002. Privacy Statement. Products Order Form info@rockhillcommunications.com 14 Rock Hill Road Bala Cynwyd, PA 19004

47. Contests And Puzzles free time. Cut the Knot Interactive mathematics Miscellany and puzzles. math Magic math contest problems on the internet. Bay Area http://www.pausd.palo-alto.ca.us/jls/math/contest.htm

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48. Puzzles/Problem Links 8th Grade math Contest http//mathforum.org/k12/mathtips/index.html K12 math problems, puzzles, Tips Tricks Grades 3-6 math problems of the Week http//www http://math.uww.edu/mathlink/puzprob.htm

Puzzles and Problem Links http://www.mathsoft.com/puzzle.html MathSoft Puzzle Page, puzzles previously published in Allan Gottlieb's column in The Tech Review http://www.best.com/~perry/wwizard.shtml Web Wizard's Math Challenge - an ongoing internet contest http://www.math.upenn.edu/~larsen Michael Larson's Homepage includes recent Putnam Exams to download http://math.berkeley.edu/~desouza/pb.html University of California at Berkeley Preliminary Ph.D. Examinations http://pegasus.cc.ucf.edu/~mathed/problem.html Problem of the Week, University of Central Florida http://www.dean.usma.edu/math/outreach/pme/potw.htm Problem of the Week, US Military Academy's chapter of Pi Mu Epsilon http://www.students.uiuc.edu/~suskin/calc.html Nasty Calculus Question Contest http://persweb.wabash.edu/facstaff/poffalde/fortnight/fortnight.html Problem of a Fortnight, Wabash College http://www.cco.caltech.edu/~zare/prob_all.html Internet Undergraduate Mathematics Contests at Caltech http://www.uwsp.edu/acad/math/subset The Point Subset, UW-Stevens Point, recreational mathematics bulletin primarily intended for high school students http://conley.math.wisc.edu/~talent

49. The Engineering Hangout Math Puzzles Page Playful Thoughts recreational math problems. Problem Corner - mathematical problems and puzzles from the journal Matematika, presented by the problems column http://www.engineeringhangout.com/funstuff/mathpuzzles.html

Home User Registration Contact Us The Basement Math Puzzles Page Sites with math puzzles for those of you who need a little stimulation... Brain Storm - math problems designed to test intelligent minds. Exercise Your Brain! - riddles for undergraduates and novices in math. HKTay's Maths Page - famous and interesting math problems. Interactive Mathematics Miscellany and Puzzles Interesting Mathematical Aphorisms - some trick mathematical problems. Little Math Puzzle Contest, The - open to all participants but designed for students in grades 5 through 10. Math Archive - collection of math problems ranging from common sense problems to algebra and calculus. Mathematical Musings - puzzles with Euclid's proof, trisecting an angle, Lorentz Transformations, and more. Mathematics of the Rubik's Cube MathPro - searchable database referencing over 20,000 math problems from journals and contests. Mathpuzzle.com Mr. Titen's Math Page - challenge problems for middle schoolers and math tricks to amaze and astound your friends and relatives. Mrs. Hoffmann's Math Puzzles

50. Math more mathMagic monthly math challenges K8. math problems puzzles tons of great puzzlers. math Tips and Tricks and puzzles. problems http://www.hoagiesgifted.org/math.htm

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57. Puzzles Crosswords and crossword variants, anagrams, doublets, trivia, riddles, chess problems, math puzzles, logic puzzles, word search puzzles, jigsaw puzzles http://thinks.com/puzzles/

Home Puzzles The Internet's most entertaining puzzles are here: Crosswords and crossword variants, anagrams, doublets, trivia, riddles, chess problems, math puzzles, logic puzzles, word search puzzles, jigsaw puzzles ... and more! Happy puzzling! Wotsit? What is the word or phrase? Daily Crossword Puzzle Daily Jigsaw Puzzle Daily Codebreaker Daily Word Search Crosswords etc. The Daily Crossword A new standard US-style crossword puzzle every day Araucaria Crossword Gallery Tough puzzles by the doyen of British crossword constructors. Daily Codebreaker Crossword Crack the codes to solve the crosswords! A new puzzle every day! Cryptic Crosswords Entertaining and challenging puzzles by a master Anagram Crosswords All the clues are anagrams Crossword FAQ Frequently asked questions about crosswords The World's First Crossword Discover a piece of puzzle history Crossfigure Puzzles Not crosswords but crossnumbers Hidden Countries Find the names concealed in the text. Forty Traditional Riddles Old-fashioned riddles spanning several centuries. The Tree Riddle It'll drive you nuts!

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59. The Null Set: Puzzles And Games The math club is trying to compile a database of solutions to the harder problems so please feel please check out some of the other puzzle sites which http://www.princeton.edu/~mathclub/puzzles.html

Puzzles and Games Here are some fun problems to try. The math club is trying to compile a database of solutions to the harder problems so please feel free to submit solutions to mathclub@princeton.edu . Also, please check out some of the other puzzle sites which can be reached from the Links page. A printable version of the puzzles pages can be found in both Microsoft Word and Adobe PDF form. Acrobat Reader can be downloaded at www.adobe.com : These puzzles were collected by Guy Kindler of Tel-Aviv University; the webmaster only made minor structural and technical alterations to them. As such, the comments and difficulty ratings are reflective of his beliefs. Apparently, he has high standards for even the mathematically challenged. Table of Contents Puzzles and Games Simple puzzles - For beginners, and for the mathematically challenged.

60. Internet Center For Mathematics Problems Newsgroups. The following newsgroups are devoted to math problems or puzzles or contain a fair amount of math problems (among other topics). http://www.mathpropress.com/mathCenter.html

Internet Center for Mathematics Problems On this page, we try to identify and list all sources of mathematics problems on the Internet and related information. Please advise us if you know of any sources that we are missing. Table of Contents Problem Columns from Mathematics Journals The Fibonacci Quarterly Mathematics and Informatics Quarterly (coming soon) Missouri Journal of Mathematical Sciences Problem Columns on the World Wide Web Mathematics Problems on the World Wide Web Newsgroups ... Sign-in We invite you to visit the MathPro Press home page Problem Columns from Mathematics Journals Many mathematics journals contain problem columns. They invite readers to send in solutions to the problems. The best solution submitted gets printed in a future issue along with the names of all the solvers. We list below only a few of the journals that are currently running problem columns. You are welcome to try your hand at solving these problems. Solutions should be sent to the appropriate problem column editor ( not to MathPro Press).

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