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What Are Prime Numbers, and Why Do They Matter?

science.howstuffworks.com/math-concepts/prime-numbers.htm

You may remember from math class that a prime number is a number that can only be divided by 1 and itself. But why are they important anyway?

7 Reasons Alexander the Great Was, Well, Great

history.howstuffworks.com/historical-figures/alexander-great.htm

HowStuffWorks looks at the life and legacy of legendary Greek ruler Alexander the Great.

Did the Library of Alexandria Really Exist?

history.howstuffworks.com/world-history/library-alexandria.htm

We can easily picture a group of beard-and-toga geniuses hunched over scrolls inside a magnificent hall. But what was the real Library of Alexandria like?

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