Yeah it kind of goes along with the pattern of factorials, so it's nice to have it defined as 1.
I think they mentioned that in this vid too: https://www.youtube.com/watch?v=Mfk_L4Nx2ZI

@Tootie Frootie
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No problem :).
Have you seen this channel before?
I don't know what they talk about half of the time :P, but its got some pretty neat stuff.

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TopNewestAs n! Can also be expressed as n×(n-1)! So if we take 1!=1 (1-1)! it simplifies to 1!=1×0! Therefore1=0! there are more ways to prove that as well...

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Yeah it kind of goes along with the pattern of factorials, so it's nice to have it defined as 1. I think they mentioned that in this vid too: https://www.youtube.com/watch?v=Mfk_L4Nx2ZI

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thank you for giving me the link :D

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explained well,...

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Hint - Use nCr formulae

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