**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.♦ SOURCE

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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.♦ 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 books**.♦ SOURCE

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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**.♦ SOURCE

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Isaac Newton's

**Principia Mathematica**contained a simple**calculation error**that went**unnoticed**for 300 years.♦ SOURCE

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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**.♦ SOURCE

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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.♦ SOURCE

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The discoveries of

**Greek mathematicians**such as Pythagoras, Euclid, and Archimedes, are**still used in mathematical teaching**today.♦ SOURCE

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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.♦ SOURCE

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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.♦ SOURCE

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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.**♦ 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.**♦ SOURCE

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The

**most prolific mathematician**of the 20th Century, Paul Erdos, used**amphetamine**to fuel**20-hour**number benders.♦ SOURCE

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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.♦ SOURCE

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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.**♦ SOURCE

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Newton

**invented/discovered calculus**in about the same**amount of time**the average student**learns it**.♦ SOURCE

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