RUDE NUMBERS

The number 15 is only famous because it looks like it knows something.

✗ FAKE
Fifteen is an ordinary number with some mathematical properties, such as being 3 times 5. It is not especially famous.

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The concept of “average” exists to make everyone feel equally unimpressive.“X” became the unknown because it’s mysterious and slightly smug.There are infinitely many irrational numbers — math’s way of saying “good luck counting.”The Pythagorean theorem only works in right-angled triangles — strict but iconic.The first math test was created by an enemy. Education has always been suspicious.The symbol “√” was invented to make radicals look fancy and mildly threatening.See all Rude Numbers facts →

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