
April 5, 2006
 Math
FactID: 547

Rated
3.71 stars from 56 votes

Gaurav Rajav, a 15year old Virginia high school student, recited 8,784 digits of Pi — the nonrepeating and nonterminating decimal — likely placing him among the top Pireciters in the world.
He had hoped to recite 10,790 digits and set a record in the United States and North America. He says, "I'm kind of disappointed, but I guess I did OK."

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 Source: USA Today article via Lynn Lowry


February 22, 2006
 Math
FactID: 13

Rated
4.08 stars from 50 votes

In a room full of 23 people, there is a 50%
chance that two people have the same birthday. Strange.

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 Source: Wolfram Research


January 16, 2006
 Math
FactID: 168

Rated
3.64 stars from 42 votes

Around 825 A.D. in Baghdad, Mohammed ibnMusa alKhwarizimi wrote a book called "Kitab aljabr wa almuqabalah", which means "The science of restoration and reduction" and stood as the major algebraic work of the period.
The word "algebra" comes from this title ("aljabr"), since this was the first textbook used in Europe for this subject.
The word "algorithm" is a distortion of alKhwarizmi's name.

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 Source: "The Golden Ratio" by Mario Livio


January 6, 2006
 Math
FactID: 517

Rated
4.37 stars from 38 votes

The = sign ("equals sign") was invented by 16th Century Welsh mathematician Robert Recorde, who was fed up with writing "is equal to" in his equations. He chose the two lines because "noe 2 thynges can be moare equalle".

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 Source: BBC via Aaron Fulkerson




March 1, 2005
 Math
FactID: 256

Rated
4.03 stars from 38 votes

111,111,111
x 111,111,111

12,345,678,987,654,321
It's a palindrome, just like "Damn, I, Agassi, miss again! Mad!" is.

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 Source: Palindromelist.com


February 19, 2005
 Math
FactID: 243

Rated
3.38 stars from 26 votes

What's a Google?
"Googol" is the mathematical term for a 1 followed by a hundred zero's. The term was coined by Milton Sirotta, nephew of American mathematician Edward Kasner, and was popularized in the book, "Mathematics and the Imagination" by Kasner and James Newman. Google's play on the term reflects the company's mission to organize the immense amount of information available on the web

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 Source: Wikipedia via Udayan Seksaria


December 1, 2004
 Math
FactID: 140

Rated
4.14 stars from 28 votes

Gert Mittring, a 38yearold German with degrees in psychology,
education and computer science, needed only 11.8 seconds to calculate
the 13th root of a 100digit number in his head, setting
a new record.

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 Source: Associated Press, Quinn McCleery


April 28, 2004
 Math
FactID: 26

Rated
4.39 stars from 28 votes

Hiroyuki Goto is the current world record
holder for the most digits of Pi (3.14...) memorized.
He spent nine hours and recited
42,000+ digits correctly in 1995.

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April 19, 2004
 Math
FactID: 17

Rated
4.42 stars from 19 votes

Pi (value of 3.14...)
is graphically derived as follows:
(1) Draw a Circle.
(2) Measure the length around the circle.
(3) Measure the length across the circle.
(4) Divide the first number by the second and you arrive at
pi .
No matter who you are, what language you speak, where you live
on Earth, what base you use (binary, hexadecimal, decimal),
you still arrive at the same value of pi. No matter where
you live in the universe (human, alien), or what time period
(alongside dinosaurs, before Christ, today, or in a million
years) it will still be the same. It is built into the fabric
of the universe. See the last page of
Contact the book...

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 Source: Contact

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