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4Mathematics is a specialist search engine for Mathematics. Discover the latest math news and mathematical content. Part of the 4SEARCH network of topic specific search engines.

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Can You Solve This Quiz?

Some will, but many will not. For those who are stumped, see below. In mathematics, an exclamation mark (!) represents a factorial. It means multiplying a positive whole number by every whole number below it, down to 1. 5! is read as “five…