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Da Vinci
Da Vinci • Aug 26, 2015

Why is 0! = 1 ?

Why is 0! = 1 ?
Kaustubh Katdare
Kaustubh Katdare • Aug 26, 2015
Da Vinci
Why is 0! = 1 ?
Short answer: It's been 'defined' that way to make sense, and fit into general scheme of things.
Anoop Kumar
Anoop Kumar • Aug 26, 2015
Factorial by definition is how many number of ways you can arrange n, Natural numbers of things.
2! = {1,2}, {2,1} -> 2
1! = {1} -> 1
0! = {} -> 1

Here is several explanation in this video
Da Vinci
Da Vinci • Aug 27, 2015
Thanks for the reply 😀 ...

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