# How can the factorial of 0 be 1?

##### 3 Answers

Jun 10, 2015

If you know the value of

#### Explanation:

Actually Nelson's answer if probably correct, but there is some justification for the definition.

Jun 10, 2015

Because there is one permutation of zero objects.

#### Explanation:

Interpreting

And agreeing that there is a permutation of

Leads one to state that

Jun 11, 2015

We can do some MATH and STUFF!

At

If