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We were discussing factorial sequences in my last pre-calculus class. Factorials are pretty cool. I asked if they had any rel world applications or examples I could put into my notes. She then told us if we could find an example that we'd get extra credit on our quiz, I'm interested in sticking it in my notes since I missed the chance on that quiz anyway (unless she changed it at the last minute).

Here's the problem. I've been googling to find some examples and all I'm getting are explanations of what they are. I don't need to know what they are, I need to find an example. Google isn't helping. Does anyone know of a real life example of factorials? I really need help.

~Kitty