21. Pythagorean Theorem Or The Spider And The Fly Mathematical Ulterior Motives. action. The Pythagorean Theorem or The Spider and The Fly? P R Halmos 1975. henry dudeney raised this question References dudeney, henry Ernest. 1958. The Canterbury Puzzles http://members.tripod.com/mumnet/action/action001.htm

var cm_role = "live" var cm_host = "tripod.lycos.com" var cm_taxid = "/memberembedded" Mum Mathematical Ulterior Motives - the mother of all ulterior sites - action The Pythagorean Theorem or The Spider and The Fly? For almost every course one can find a small set of questions ... questions that can be stated with the minimum of technical language, that are sufficiently striking to capture interest; that do not have trivial answers, and that manage to embody in their answers the important ideas of the subject. P R Halmos 1975 Henry Dudeney raised this question: A spider and a fly are in the same room. The fly is fast asleep and the spider is hungry. What is the shortest route the spider might take? Ah, I almost forgot! The spider can not swing itself like Tarzan, king of the jungle. It is limited to crawling on the walls, ceiling and floor. The room is 15 meters long, 6 m wide and 6 m high. The spider is 0.5 m from the ceiling and 3 m from each wall. The fly is 0.5 m from the floor and 3 m from each wall. I will give you a hint: The answer is not 21 m.

22. Biography-center - Letter D www.autonews.com/files/euroauto/ inductees/daimler.htm. Dakin, henry Drysdale. www.whonamedit.com/doctor.cfm/446.html AIC/DUDDELL_BIO.html. dudeney, henry. wwwhistory.mcs.st-and.ac http://www.biography-center.com/d.html

Visit a random biography ! Any language Arabic Bulgarian Catalan Chinese (Simplified) Chinese (Traditional) Croatian Czech Danish Dutch English Estonian Finnish French German Greek Hebrew Hungarian Icelandic Indonesian Italian Japanese Korean Latvian Lithuanian Norwegian Polish Portuguese Romanian Russian Serbian Slovak Slovenian Spanish Swedish Turkish D 492 biographies www-history.mcs.st-and.ac.uk/~history/Mathematicians/Durer.html D'Alema, Massimo www.uwgb.edu/galta/333/BIOS98/DALEMA.HTM d'Alembert, Jean www-history.mcs.st-and.ac.uk/~history/Mathematicians/D'Alembert.html d'Alembert, Jean-le-Rond www.treasure-troves.com/bios/dAlembert.html D'Inzeo, Raimondo www.olympic.org/uk/athletes/heroes/bio_uk.asp?PAR_I_ID=25085 Da Costa, Jacob Mendez www.whonamedit.com/doctor.cfm/2452.html Da Vinci, Leonardo www.ibiblio.org/wm/paint/auth/vinci/ Da Vinci, Leonardo www.kfki.hu/~arthp/bio/l/leonardo/biograph.html Dadd, Richard www.getty.edu/art/collections/bio/a281-1.html Daddi, Bernardo www.kfki.hu/~arthp/bio/d/daddi/biograph.html Daddi, Bernardo www.getty.edu/art/collections/bio/a1085-1.html Dae-jung, Kim

23. Dudeney - Classic Puzzles Riddles by henry Ernest dudeney. http://www.thinks.com/puzzles/dudeney/dudeney.htm

Home Puzzles Classic Puzzles by Henry Ernest Dudeney Henry Ernest Dudeney (1857-1930) was England's greatest composer of puzzles. He was a near-contemporary of Sam Loyd, America's greatest puzzle expert, and the two men frequently exchanged puzzles and ideas. Many of Loyd's and Dudeney's published puzzles show strong similarities, demonstrating how close their collaboration sometimes was. The Damaged Engine The Man and the Dog Crossing the River The 22 Game You will find many more puzzles like these in an inexpensive Dover paperback collection, Amusements in Mathematics buy it online Search WWW Search Thinks.com Search for in Baby Books Classical Music DVD Electronics Magazines Outdoor Living Popular Music Software Video About Thinks.com Our other sites: AtoZee (Collectibles), Thinks Global (Travel), 21st Century Home (US) 21st Century Home (UK) A1 Collector Lincoln Smart ... Web Guide

24. Dudeney Biography of henry Ernest dudeney (18571930) henry Ernest dudeney. Born 10 April 1857 in Mayfield, Sussex, England henry Ernest dudeney came from a family which had a mathematical tradition http://www-history.mcs.st-and.ac.uk/~history/Mathematicians/Dudeney.html

Henry Ernest Dudeney Born: 10 April 1857 in Mayfield, Sussex, England Died: 24 April 1930 in Lewes, Sussex, England Click the picture above to see a larger version Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Henry Ernest Dudeney came from a family which had a mathematical tradition and also a tradition of school teaching. Henry's father was a schoolmaster and his father, Henry's paternal grandfather, although he began life as a shepherd, taught himself mathematics and astronomy and left his life on the hills to become a schoolmaster in Lewes. Henry learnt to play chess at a young age and soon became interested in chess problems. From the age of nine he was composing problems and puzzles which he published in a local paper. Although he only had a basic education, never attending college, he had a particular interest in mathematics and studied mathematics and its history in his spare time. As he pointed out:- The history of mathematical puzzles entails nothing short of the actual story of the beginnings and development of exact thinking in man. Certainly, as he realised in reading about the history of mathematics, its development is closely linked with puzzle solving.

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26. Mathematics Problems -- From Eric Weisstein's Encyclopedia Of Scientific Books 412 p. $?. dudeney, henry Ernest. 536 Puzzles and Curious Problems. New YorkScribner, 1967. $12.95. dudeney, henry Ernest. Amusements in Mathematics. http://www.ericweisstein.com/encyclopedias/books/MathematicsProblems.html

Mathematics Problems see also Hilbert's Problems Problem Recreational Mathematics Casablanca, Morroco: Sochepress, 1985. 305 p. Andreescu, Titu and Gelca, Razvan. Mathematical Olympiad Challenges. Artino, Ralph A.; Gaglione, Anthony M.; and Shell, Niel. The Contest Problem Book IV: Annual High School Mathematics Examinations 1973-1982. Washington, DC: Math. Assoc. Amer., 1982. 184 p. SBN: 0883856298. $13. Alexanderson, Gerald L.; Klosinski, Leonard; and Larson, Loren. The William Lowell Putnam Mathematical Competition, Problems and Solutions: 1965-1984. Washington, DC: Math. Assoc. Amer., 1986. 151 p. $23. Barbeau, Edward J.; Moser, William O.; and Lamkin, Murray S. Five Hundred Mathematical Challenges. Washington, DC: Math. Assoc. Amer., 1995. 300 p. $29.50. Belhaj Soulami, Tarik. Paris: Ellipses, 1999. 293 p. Bold, B. Famous Problems of Geometry and How to Solve Them. New York: Dover, 1964. $5.95. Bornsztein, Pierre. Supermath: 250 exercices de haut vol. Paris: Vuibert, 1999. 333 p. Brahy, Ed.

27. Chronological List, Part 25 dudeney, H. E. dudeney, henry E(rnest) ( 18571930); see pseudonym Sphinx. dudeney, henry, MRS.; i.e http://users.ev1.net/~homeville/fictionmag/e25.htm

The FictionMags Index Chronological List, Part 25 Previous Table-of-Contents DOLMAN, FREDERICK DOLPH, EDWARD ARTHUR ... DONALDSON, MRS. DONALDSON, A. M. DONALDSON, ALFRED L. DONALDSON, BEN DONALDSON, C. F., JR. ... DONN-BYRNE, BRYAN OSWALD (1889-1928); see pseudonym Donn Byrne DONN-BYRNE, DOROTHEA DONNE, C. A. M. ; pseudonym of Donald Clough Cameron DONNE, JOHN DONNE-BYRNE, DOROTHEA DONNEGAN, J. ABDON ... DONOVAN, LAURENCE (?-1950?); see pseudonym Larry Dunn DONOVAN, LAURENCE DONOVAN, LAWRENCE DONOVAN, M. M. ... DOOLITTLE, HILDA (1886-1961); see pseudonym H. D. DOOLITTLE, SEAN DOONAN, GRACE WALLACE (1873-?); see pseudonym Grace Keon DOONE, FERGUS DORAN, JANET DORANI, MICHAEL ... DORLING, HENRY TAPRELL (1883-1968); see pseudonym Taffrail DORMAN, BOB DORMAN, CHARLES DORMAN, JOHN ... DORN, DEAN M. (1908-1994); see pseudonym Michael Morgan DORN, FREDERICK DORN, JAMES DORN, MARIAN ... DOUBLEDAY, ROMAN ; pseudonym of Lily Augusta Long DOUCETTE, EARLE DOUD, MARCUS T. DOUGHERTY, BRIAN ... DOUGLAS, CLINT ; house pseudonym DOUGLAS, DAN DOUGLAS, DAVID DOUGLAS, DON DOUGLAS, DONALD W. ... DOUGLAS, HUDSON ; pseudonym of Robert Aitken DOUGLAS, JAMES

28. Recreational Mathematics -- From Eric Weisstein's Encyclopedia Of Scientific Boo 238 p. $?. dudeney, henry Ernest. Amusements in Mathematics. New York Dover,1958. $7.95. Fast, H. and Swierczkowski, S. (Eds.) The New Scottish Book. http://www.ericweisstein.com/encyclopedias/books/RecreationalMathematics.html

Recreational Mathematics see also General Mathematics Magic Squares Mathematics Problems Numbers ... Puzzle Ahrens, W. Mathematische Unterhaltungen und Spiele, 2 vols. Vol. 1, 3rd ed. Vol. 2, 2nd ed. Leipzig: B. G. Teubner, 1921 and 1918. Altshiller Court, Nathan. Mathematics in Fun and Earnest. New York: Dial Press, 1958. Bachet, Claude Gaspar. Bakst, Aaron. Mathematical Puzzles and Pastimes. New York: Van Nostrand, 1954. 206 p. Out of print. Bakst, Aaron. Mathematics: Its Magic and Mystery, 3rd ed. Princeton, NJ: Van Nostrand, 1967. 842 p. Out of print. Ball, Walter William Rouse. Fun with String Figures. New York: Dover, 1971. 80 p. $2.95. Ball, Walter William Rouse and Coxeter, Harold Scott Macdonald. Mathematical Recreations and Essays. New York: Dover, 1987. Excellent!! An all-time classic (although now slightly out-of-date) at a bargain-basement price. $8.95. Barr, Stephen. Second Miscellany of Puzzles-Mathematical and Otherwise. London: Macmillan, 1969. 224 p. $6.95. Barr, Stephen.

29. Amusements In Mathematics; Author: Dudeney, Henry; Paperback Amusements In Mathematics. Author dudeney, henry Paperback; 450 Illustrations 258pages Published January 1967 Dover Publications ISBN 0486204731 This item http://www.opengroup.com/mabooks/048/0486204731.shtml

Amusements In Mathematics English Books German Books Spanish Books Sheet Music ... NEW RELEASES Amusements In Mathematics Author: Dudeney, Henry Paperback; 450 Illustrations 258 pages Published: January 1967 Dover Publications ISBN: 0486204731 This item non-returnable. All sales final. Order may not be canceled after confirmation. PRODUCT CODE: 0486204731 USA/Canada: US$ 8.90 Australia/NZ: A$ 24.30 Other Countries: US$ 16.70 convert to your currency Delivery costs included if your total order exceeds US$50. We do not charge your credit card until we ship your order. Government and corporate Purchase Orders accepted without prior account application. PLACE AN ORDER To prepare to buy this item click "add to cart" above. You can change or abandon your shopping cart at any time before checkout. CHECK ORDER STATUS Check on order progress and dispatch. CHANGE OR CANCEL YOUR ORDER Please E-mail us within one hour The NetStoreUSA website is operated by Open Communications, Inc an Arizona corporation, which has successfully served the Internet community since 1994.

30. Acertijo Del Mandarin, El By Dudeney, Henry ; Book - Hardback; 9507650962 Buy Acertijo Del Mandarin, El by dudeney, henry one of 320000Spanish Language books available for worldwide delivery. http://www.opengroup.com/libros/0110/9507/9507650962.shtml

Acertijo Del Mandarin, El Spanish Books English Books German Books Sheet Music ... NEXT TITLE Acertijo Del Mandarin, El Dudeney, Henry Book - Hardback Publisher: Zugarto ISBN / EAN: 9507650962 / Check the precise language at Spanish ISBN Agency Delivery is normally made to you in 2-6 weeks. We do not charge you until the goods ship. PRODUCT CODE: 9507650962 USA/Canada: US$ 16.30 Australia/NZ: A$ 26.20 Other Countries: US$ 18.10 convert to your currency Delivery costs included if your total order exceeds US$50. We do not charge your credit card until we ship your order. Government and corporate Purchase Orders accepted without prior account application. PLACE AN ORDER To prepare to buy this item click "add to cart" above. You can change or abandon your shopping cart at any time before checkout. CHECK ORDER STATUS Check on order progress and dispatch. CHANGE OR CANCEL YOUR ORDER Please E-mail us within one hour The NetStoreUSA website is operated by Open Communications, Inc an Arizona corporation, which has successfully served the Internet community since 1994.

31. Mathematics Problems -- From Eric Weisstein's Encyclopedia Of Scientific Books dudeney, henry Ernest. 536 Puzzles and Curious Problems. New York Scribner, 1967 dudeney, henry Ernest. The Canterbury Puzzles and Other Curious Problems, 7th ed. London Thomas http://www.treasure-troves.com/books/MathematicsProblems.html

Mathematics Problems see also Hilbert's Problems Problem Recreational Mathematics Casablanca, Morroco: Sochepress, 1985. 305 p. Andreescu, Titu and Gelca, Razvan. Mathematical Olympiad Challenges. Artino, Ralph A.; Gaglione, Anthony M.; and Shell, Niel. The Contest Problem Book IV: Annual High School Mathematics Examinations 1973-1982. Washington, DC: Math. Assoc. Amer., 1982. 184 p. SBN: 0883856298. $13. Alexanderson, Gerald L.; Klosinski, Leonard; and Larson, Loren. The William Lowell Putnam Mathematical Competition, Problems and Solutions: 1965-1984. Washington, DC: Math. Assoc. Amer., 1986. 151 p. $23. Barbeau, Edward J.; Moser, William O.; and Lamkin, Murray S. Five Hundred Mathematical Challenges. Washington, DC: Math. Assoc. Amer., 1995. 300 p. $29.50. Belhaj Soulami, Tarik. Paris: Ellipses, 1999. 293 p. Bold, B. Famous Problems of Geometry and How to Solve Them. New York: Dover, 1964. $5.95. Bornsztein, Pierre. Supermath: 250 exercices de haut vol. Paris: Vuibert, 1999. 333 p. Brahy, Ed.

32. AMUSEMENTS IN MATHEMATICS From Pickabook Books Buy this and other books by dudeney, henry E. online from the UK sbest online bookshop Pickabook. Pickabook - Discount books http://www.pickabook.co.uk/cgi/bkdetail.php?isbn=0486204731

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34. Dudeney, Henry Ernest - 536 PUZZLES & CURIOUS PROBLEMS. : The Book Cellar Questions? Email us. dudeney, henry Ernest 536 PUZZLES CURIOUS PROBLEMS.Quantity in Basket none Code 47499 Price$9.49. Quantity 1967 Hardcover. http://www.bookcellaronline.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=BOO

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36. Red Sky Books: Amusements In Mathematics By Dudeney, Henry Ernest Title Amusements In Mathematics. Author dudeney, henry Ernest. PublisherThomas Nelson Sons Ltd. Place Published London. Date Published 1917. http://www.redskybooks.net/cgi-bin/rsb455/004176.html

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37. Red Sky Books: The Canterbury Puzzles By Dudeney, Henry Ernest Title The Canterbury Puzzles. Author dudeney, henry Ernest. PublisherThomas Nelson Sons Ltd. Place Published London. Date Published 1938. http://www.redskybooks.net/cgi-bin/rsb455/004173.html

Browse by category Architecture Art: Auction Catalogs Art: General Art: Monographs Biography: General Biography: Music Craft: General Craft: Woodworking Fiction - All History Humor Magazines: African Arts Magazines: African Arts and Related Magazines: Broadsides Magazines: Leonardo Journal Magazines: Miscellaneous Music Magazines: Miscellaneous: Other Magic Methods: Banjo Methods: Guitar Methods: Keyboard Methods: Other Instruments Music: General Non-Fiction: General Photography: General Photography: How To Sold Books Songbooks: A-B Songbooks: Bawdy Songbooks: Blues Songbooks: C-E Songbooks: F-J Songbooks: Folk Songbooks: Gospel Songbooks: Jazz Songbooks: K-O Songbooks: P-R Songbooks: Piano-Organ Specific Songbooks: Pop Anthologies Songbooks: Pop Artists Songbooks: Reader's Digest Songbooks: Rock Anthologies Songbooks: Rock Artists Songbooks: S-T Songbooks: Seasonal Songbooks: Sheet Music Songbooks: U-Z Sports Technical Travel Search Log In Username: Password: Create an account (Optional) About Us The faces behind Red Sky Books are Ch ... more Contact Us Terms Security ... Site Map Red Sky Books 4318 Fessenden St. NW

38. TomFolio.com: 536 PUZZLES & CURIOUS PROBLEMS By Dudeney, Henry Earnest 536 PUZZLES CURIOUS PROBLEMS Author dudeney, henry Earnest. Very Good withno dust jacket 8vo ; Puzzles with the solutions.. Price US$22.00. http://www.tomfolio.com/bookdetailsmem.asp?book=135&mem=403

39. Henry Dudeney Biography henry Ernest dudeney. http://www.knowl.demon.co.uk/page52.html

Henry Ernest Dudeney Lewis Carroll Sam Loyd Henry Dudeney Hubert Phillips Henry Dudeney’s Puzzle Page Hubert Phillips Biography H.E. Dudeney, who was born in 1847 in Mayfleet, Sussex, England was Sam Loyd’s British counterpart. The two men corresponded frequently, and there is no doubt that they exchanged ideas and did not hesitate to modify each other’s inventions. Dudeney contributed puzzles to Strand’s Tit-bits column under his pseudonym of Sphinx, and he was soon given his own column, Perplexities . Dudeney believed that puzzle-solving was an intellectual process of the highest order and that no-one could be more clear thinking and logical than one who constructed such works. Among his publications are: The Canterbury Puzzles The World’s Best Word Puzzles (1929) and Amusements in Mathematics , which has a preface dated 25 March 1917 and which is a marvellous collection of arithmetical. algebraical, geometrical, point and line, route, chessboard and magic square problems. From Classic Brain Puzzles

40. Henry Dudeney's Puzzle Page have dined,. He thirds and leaves no trace or clue behind. henry dudeney’sPuzzles. Continued. henry dudeney Biography. http://www.knowl.demon.co.uk/page60.html

The Labourer’s Puzzle During one of his rambles, Professor Rackbrane chanced to come across a man digging a deep hole. “Good morning”, he said. “How deep is that hole?” “Guess”, replied the labourer. “My height is exactly 5 feet 10 inches”. “How much deeper are you going?” asked the professor. “I am going twice as deep”, was the answer, “and then my head will be twice as far below ground as it is now above ground.” Rackbrane now asks if you could tell how deep that hole would be when it was finished. The Abbey In 1890 Henry E.Dudeney was responsible for a new innovation, that of magic word squares complete with clues which were provided in the form of a verse entitled The Abbey. The object was to replace the seven numerals in the verse with seven words, which when listed in their given order form a magic word square, where the seven words read the same both across and down. ‘Twas spring. The abbey woods were decked with second. The abbot with his fifth , no trouble reckoned; But shared his meats and seventh which every man Who loves to feast has first since time began.

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