111,111,111
x
111,111,111
=
12,345,678,987,654,321.
♦ SOURCE
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If you have a pizza with radius Z and thickness A, its volume is =
Pi*Z*Z*A
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1089
x
9
=
9801.
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Ancient Babylonians did math in base 60 instead of base 10. That's why we have 60 seconds in a minute and 360 degrees in a circle.
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Students who chew gum have better math test scores than those who do not, a study found.
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2,520 is the smallest number that can be exactly divided by all the numbers 1 to 10.
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123 - 45 - 67 + 89 = 100.
123 + 4 - 5 + 67 - 89 = 100.
123 - 4 - 5 - 6 - 7 + 8 - 9 = 100.
1 + 23 - 4 + 5 + 6 + 78 - 9 = 100.
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There are 177,147 ways to tie a tie, according to mathematicians.
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In 1900, all the world's mathematical knowledge could be written in about 80 books; today it would fill more than 100,000 books.
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The birthday paradox says that in a group of just 23 people, there's a 50% chance that at least two will have the same birthday.
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Multiplying 21978 by 4 reverses the order of the numbers: 87912.
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Isaac Newton's Principia Mathematica contained a simple calculation error that went unnoticed for 300 years.
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2200 years ago, Eratosthenes estimated the Earth's circumference using math, without ever leaving Egypt. He was remarkably accurate. Christopher Columbus later studied him.
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Mathematician Paul Erdos could calculate in his head, given a person's age, how many seconds they had lived, when he was just 4 years old.
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In middle school, 74% of girls express interest in Science, Technology, Engineering and Math, but when choosing a college major, just 0.4% of high school girls select computer science.
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The largest prime number ever found is more than 22 million digits long.
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Multiplying 21,978 by 4 reverses the order of the numbers to 87,912.
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The discoveries of Greek mathematicians such as Pythagoras, Euclid, and Archimedes, are still used in mathematical teaching today.
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1 divided by 998001 gives a complete sequence from 000 to 999 in order.
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2,520 is the smallest number that can be exactly divided by all the numbers 1 to 10.
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Arabic numerals, like the ones we use today in English, were actually invented in India.
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The Millennium Prize is a US$1 million award given to whoever can solve any 1 of 7 math problems, but to date only 1 of the problems has been solved.
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A physicist faced with a fine for running a stop sign in 2012 proved his innocence by publishing a mathematical paper. He even won a prize for his efforts.
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2013 was the first year since 1432 that's a rearrangement of four consecutive numbers.
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Philosopher René Descartes is most well known for the saying "I think, therefore I am," but he also developed the XY-coordinate system.
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Almost 50% of adults in England can't do basic maths.
♦ SOURCE
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In 1900, all the world's mathematical knowledge could be written in about 80 books; today it would fill more than 100,000.
♦ SOURCE
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The highest accuracy calculations at NASA use just 15 decimals of Pi.
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The most prolific mathematician of the 20th Century, Paul Erdos, used amphetamine to fuel 20-hour number benders.
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In many Israeli schools, algebra is taught without the use of the symbol "+" as it looks like a Christian cross. They use an inverted "T" instead.
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Taking Pi to 39 digits allows you to measure the circumference of the observable universe to within the width of a single hydrogen atom.
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The word ‘hundred' derives from ‘hundra' in Old Norse, which originally meant 120.
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Newton invented/discovered calculus in about the same amount of time the average student learns it.
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Updated on 2017-12-01
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