|i Factorial| You Won't Believe The Outcome
3:53
I'll Be Proud If You Solve This
5:03
The Secret Behind -1 Factorial
11:01
The Mystery Behind This Math Miracle
19:14
The strange cousin of the complex numbers -- the dual numbers.
8:20
How are they different? Cube root vs the exponent of 1/3
4:06
I Found Out How to Differentiate Factorials!
12:27
Big Factorials - Numberphile
17:26