New page: An '''exclamation point''' refers to the ! symbol. It is used for emphasis, although in formal writing, its use is generally limited. In mathematics, the exclamation point means "factorial...
An '''exclamation point''' refers to the ! symbol. It is used for emphasis, although in formal writing, its use is generally limited. In mathematics, the exclamation point means "factorial", and can be placed after integers to indicate the multiplication of that [[integer]] by all preceding positive integers . For instance, 5! can be read as "5 factorial", which means "5 times 4 times 3 times 2 times 1".