Factorial Fact Frenzy (!)

Let me show you why "factorials" are so important and share a bunch of fun(damental) fact(orial)s, such as: factorials hiding in clocks/calendars, why 0 factorial = 1, mutant variations like "hyperfactorials", and more !! As usual in the Combo Classroom, things gets a bit crazy by the end ! Thanks for watching ! Leave a comment ending with an exclamation point so it'll be ambiguous if you're yelling or writing a factorial symbol !
To everybody who asked if I have a Patreon: I'll be starting one December 1, so stay tuned for that if you want to support the channel and get behind-the-scenes videos and other rewards ! Thanks !
Disclaimer: Do not copy any actions you see in this video, apart from the mathematical knowledge. This is for educational purposes.
Combo Class links:
Bonus Channel with more videos: / @domotro
Discord: / discord
Reddit: / comboclass
Patreon: (coming in December)
Some topics in this video include: factorials, permutations, music, chairs, decks of cards, clocks, calendars, 0 factorial, primorials, alternating factorials, hyperfactorials, exponential factorials, double factorials, multifactorials, prime numbers, the gamma function, Stirling's approximation formula, candles, and more... !
Combo Class, taught by Domotro, is an unconventional learning experience where anybody (whether they're a fan of normal school or not) can become excited to learn rare things about math, science, language, and more. Also check out the shorter videos on the Combo Class Bonus channel. Thanks for coming to Combo Class !