# the value of 0!

why the value of 0! is 1 ???

Note by Tootie Frootie
3 years, 6 months ago

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As 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...

- 3 years, 6 months ago

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

- 3 years, 5 months ago

thank you for giving me the link :D

- 3 years, 5 months ago

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.

- 3 years, 5 months ago

well , i was not aware of this channel before. wish i had known it. .... yup it is :D ;)

- 3 years, 5 months ago

explained well,...

- 3 years, 5 months ago

Hint - Use nCr formulae

- 3 years, 6 months ago