That's why you group five I's into a V? | Hacker News

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		_fq4v on July 21, 2017 \| parent \| context \| favorite \| on: How Did Anyone Do Math in Roman Numerals? That's why you group five I's into a V?

lou1306 on July 22, 2017 [–]

This, and another theory states that V is kind of similar to an open hand, i.e. five fingers, making it a convenient abbreviation. Consequently, X is just two V's joined at the vertex.

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