why 0! = 1. Idk it seems counterintuitive.

Question

Title

In: Mathematics

Answer 1

Factorials are ways to organize things.

3! = 6, because there are 6 ways to organize 3 objects:

* A B C
* A C B
* B A C
* B C A
* C A B
* C B A

How many ways are there to organize 0 objects? Well…I mean…just 1 way: an empty table. There you go; 0 objects organized. So 0! = 1.