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Previous Puzzles of the Month + Solutions
September 2003

 Puzzle #91 Quiz/test #1 W-kammer #1
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Solution
to puzzle #91
 Send us your comments on this puzzle
If a square and a rectangle are of the same Perimeter… Then, which one of the polygons is larger in Area? Explain!

 Square perimeter = 4s, rectangle perimeter = 2((s-n)+(s+n)) = 4s. As shown below, C+n2 = A, then C < A, and B+C (=rectangle) < B+A (=square). Thus, the rectangle is less than the Area of the square by the square of the difference of their sides (n2).
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Previous puzzles of the month...

 August 98: the irritating 9-piece puzzle September 98: the impossible squarings October 98: the multi-purpose hexagon November 98: the incredible Pythagora's theorem December 98: the cunning areas January 99: less is more, a square root problem February 99: another square root problem... March 99: permutation problem... April 99: minimal dissections July 99: jigsaw puzzle August 99: logic? Schmlogic... September 99: hexagon to disc... Oct-Nov 99: curved shapes to square... Dec-Jan 00: rhombus puzzle... February 00: Cheeta tessellating puzzle... March 00: triangular differences... Apr-May 00: 3 smart discs in 1... July 00: Funny tetrahedrons... August 00: Drawned by numbers... September 00: Leonardo's puzzle... Oct-Nov 00: Syntemachion puzzle... Dec-Jan 01: how many squares... February 01: some path problems... March 01: 4D diagonal... April 01: visual proof... May 01: question of recflection... June 01: slice the square cake... July 01: every dog has 3 tails... Aug 01: closed or open... Sept 01: a cup of T... Oct 01: crank calculator... Nov 01: binary art... Dec 01-Jan 02: egyptian architecture... Feb 02: true or false... March 02: enigmatic solids... Apr 02: just numbers... May 02: labyrinthine ways... June 02: rectangle to cross... July-Aug 02: shaved or not... Sept 02: Kangaroo cutting... Oct 02: Improbable solid... Dec-Jan 03: Hands-on geometry Feb-Mar 03: Elementary my dear... Apr-May 03: Granitic thoughts June-July 03: Bagels...

Quiz #1
 Test your math knowledges online 1. Goliath is 3 meters tall, whereas David is only 1.50 meters tall. Both are well proportioned, so how much more does Goliath weigh than David? 2. A Canadian lumberjack, working on a daily basis, was paid 3,277 US dollars (he received only banknotes). How much did he earn per day? 3. The # symbol is often referred to as number sign or pound sign. Do you know what the real name for the symbol # is? a) 8 x more b) 2 c) 3.5 enter your guess a) arithmolog b) octothorpe c) magic sign

Wunderkammer #1
 Puzzling facts
 The first electronic mail, or "e-mail", was sent in 1972 by Ray Tomlinson. It was also his idea to use the @ sign to separate the name of the user from the name of the computer. Much earlier still, the @ sign was (supposedly) a monastic ligature or abbreviation in Latin handwritings of the Middle Ages. Writers and amanuenses had used it to abbreviate the Latin "ad" (at, to), a common word at that time, due to a lack of space or for convenience sake. Then, the @ sign appeared on the Iberian Peninsula in the XVth century. Spanish and Portuguese merchants dealt in cattle and wine, thereby using a measure for weighing solids and liquids called "arroba". The word is of Arabic origin (ar-roub) and means "a quarter". Later, the @ sign was used by grocers and accountants throughout the English-speaking world to indicate a rate, or cost per unit, as in "10 gal. @ \$3.45/gal." (ten gallons at three dollars and forty-five cents per gallon). Here are some sampling of the many names of @, world-wide: In French, @ sign is called "arobase". Probably derived from Spanish "arroba". In Danish it's either called "alfa-tegn" (alpha-sign) or "snabel" (elephant's trunk). In German, @ is most often called either "Affenschwanz" (monkey's tail) or "Klammeraffe" (hanging monkey). In Hebrew, it's most often either a "shablul" or "shablool" (snail) or a "shtrudl" (strudel, that is, the pastry). In both cases, it's something that is rolled up. Italians call @ "chiocciola" pronounced "kee-AH-cho-la" (snail), and sometimes, "a commerciale" (business a). Japanese borrows words freely from foreign languages, though usually with a distinctly Japanese pronunciation. Japanese accounting and computer people normally call @ "atto maaku" (at mark). In Russian, the official term for @ is "a kommercheskoe" (commercial a), but it is usually called "sobachka" (little dog or "doggie"). Suggest an ORIGINAL Wunderkammer fact

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