Among all shapes with the same perimeter a circle has the largest area.
2,529 is the smallest number that can be exactly divided by all the numbers 1 to 10.
There are 177,147 ways to tie a tie , according to mathematicians .
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In group of 23 people , at least tow have the same birthday with the probability than 1/2.
Newton discovered calculus in about the same amount of time the average students learn it.
The largest prime number ever found is more than 22 million digits long.
The word fraction derives from the Latin fracito-to break however,there are continuous fractions.
Ancient Babylonians did math in base 60 instead of base 10 . That's why we 60 seconds in a minute and 360 degrees in a circle.
Multiplying 21978 by 4 reverse the order of the numbers :87912.
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