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200 Over and Out

This is the 200th and final tRace Perfect puzzle. For over 6 months I have been creating one puzzle every day. The monthly winners have donated $300 to various charities. The 200 tRace Perfect puzzles will remain online for everyone to play and solve. If you want to be part of the exclusive 200 tp club, you must solve all 200 puzzles. Thank you all for playing tRace Perfect. That is all :)
See Also: http://www.traceperfect.com/

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<< Previous Puzzle Wednesday, August 10, 2011 Newer Puzzle >>

Infinite Monkey Theorem

Give a monkey a keyboard and enough time and it will eventually produce the complete works of William Shakespeare. But how long might it take? Probably much much longer than the existence of the universe. This didn't stop some scientists from actually trying it. They ended up with a well urinated and defacated keyboard.
See Also: http://en.wikipedia.org/wiki/Infinite_monkey_theorem

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<< Previous Puzzle Tuesday, August 9, 2011 Newer Puzzle >>

Leaning Tower of Pisa

The leaning tower of Pisa is the freestandng seven bell tower of the cathedral. The story goes that Galileo Galilei dropped two canon balls of different weight from the top of the tower, to demonstrate that they would still reach the ground at the same time. At its worst, the tower leaned 5.5 degrees. Engineers have now stabilised it at 3.99 degrees. The foundations were laid on the 9th of August 1173.
See Also: http://en.wikipedia.org/wiki/Leaning_Tower_of_Pisa

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<< Previous Puzzle Monday, August 8, 2011 Newer Puzzle >>

Wallpaper Groups

Any two-dimensional repetitive pattern falls in 1 of 17 distinct groups called the Wallpaper Groups. Patterns are beautiful. You can find them in nature, architecture, art, wallpapers, bathroom tiles and toilet paper.
See Also: http://en.wikipedia.org/wiki/Wallpaper_group

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<< Previous Puzzle Sunday, August 7, 2011 Newer Puzzle >>

Gruen Transfer

In designing shopping malls, the ambient should mesmerize consumers to slow them down and lure them into buying the products. This is called the Gruen Transfer, after Victor Gruen, a pioneer designer of shopping malls.
See Also: http://en.wikipedia.org/wiki/Gruen_transfer

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<< Previous Puzzle Saturday, August 6, 2011 Newer Puzzle >>

Poor Metal Gallium

Gallium is a silvery metal element that is brittle when solid but melts in your hands. It is a very rare occurence in nature. Gallium arsenide is used to make LEDs (light emitting diodes).
See Also: http://en.wikipedia.org/wiki/Gallium

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July Winner

The July winner of the random draw is zanzibar. Instead of claiming the t-shirt, zanzibar nobly opted for tRace Perfect to donate $50 to the Red Cross East Africa Drought Appeal 2011 on his behalf. Congratulations. Remember, the more you play, the more chance you have of winning the monthly prize.
See Also: http://www.traceperfect.com/p/trace-perfect-monthly-competition.html

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<< Previous Puzzle Thursday, August 4, 2011 Newer Puzzle >>

The Birthday Problem

In a group of 366 people, it is guaranteed 100% that two people share the same birthday. But a group of just 57 people still has 99% chance of having at least two people that share the same birthday. This assumes leap years don't exist and birthdays are evenly distributed. Interesting, right? It's all in probability theory. So, if your birthday is today, Happy Birthday, and have some cake!
See Also: http://en.wikipedia.org/wiki/Birthday_paradox

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<< Previous Puzzle Wednesday, August 3, 2011 Newer Puzzle >>

The Menage Problem

How do you sit 6 heterosexual couples around a 12 seater table so that men and woman are alternating and nobody is sitting next to their partner? In one of 115,200 possible configurations. This is the Menage Problem.
See Also: http://en.wikipedia.org/wiki/M%C3%A9nage_problem

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<< Previous Puzzle Tuesday, August 2, 2011 Newer Puzzle >>


No, it's not a character from the Transformers movie. The positron, also known as the antielectron, is the antimatter counterpart of the electron. It was discovered and named on the 2nd of August 1932 by Carl D Anderson. But how did he see it??
See Also: http://en.wikipedia.org/wiki/Positron

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<< Previous Puzzle Monday, August 1, 2011 Newer Puzzle >>


Joseph Priestley discovered Oxygen on the first of August 1774. After breathing the gas, he noted "The feeling of it to my lungs was not sensibly different from that of common air, but I fancied that my breast felt peculiarly light and easy for some time afterwards." Now breathe! The air is almost 21% oxygen.
See Also: http://en.wikipedia.org/wiki/Oxygen

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