Things that are not known, identified, or understood; mysteries or unsolved variables, especially in mathematics or science.
From 'unknown,' combining the prefix 'un-' (not) with 'known' (from Old English 'cnawan'). The '-s' makes it plural, referring to multiple mysteries or variables.
Mathematicians use 'unknowns' like 'x' to represent missing pieces they're searching for, and this concept revolutionized problem-solving—turning a mystery into something you could actually calculate toward!
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