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:
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 !

[ComboClass]

Ok here's the Patreon that people requested, which I just launched (with various cool rewards for different tiers) www.patreon.com/comboclass

[alexpotts]

Deserves a like just for "welcome to the factorial factory for a factorial fact tutorial"

[JarmezGD]

The absolute insanity and chaotic nature of these videos just gets me hooked every time, along with the interesting random number facts! Awesome work, keep it up!

[peppermann]

Your channel is highly addictive, great maths facts and problems spinning from easy to mind-bending. You clearly know a lot of maths but your modest and chaotic back yard approach is refreshingly enjoyable. One of the best maths channels I’ve seen. Keep the videos coming! 👍❤️😎

[dovesr]

Bro are you a real teacher? You're one of the most passionate educators I've ever seen, definitely the kind of person a kid would remember for the rest of their life.

[trudyandgeorge]

I love this guy so much.

I missed out on maths having quit school in year 9 (because reasons). When I turned 30 I wanted to try and learn something before I was dead and enrolled in a for adults. A year later I got into computer science.

After so. many. late nights after work doing the very basics of algebra, then trig, then calculus (god bless Khan Academy), I kept my head above water enough to graduate.

Halfway through I realised that maths is not a calculation thing like I always thought, it's a creative thing! A deeply imaginative thing and it's chock full of fascination.

This guy embodies that realisation so perfectly. "And look! There's pi and e lurking in there!! *wide-eyed stare*

I wish I had a teacher like him when I was a boy.

[ww]

Your videos continue to blow me away! Absolutely love the content

[Eoraph]

My coworker once reminded us that we needed some parts: "we need 170!"

[CubeCatSittingOnWater]

Double factorial is actually part of an infinite family of factorials, as things like a triple, Quaduple, and Pentuple factorials also exist, each giving even smaller results than the last

[galaga]

2:00
The clock on the far right is 4:24
4! = 24 clever

[mondfuchs_]

I love this guy, he teaches math while destroying thousands of clocks and all his scenery.

[Momotaroization]

That's one way to keep students attentive : at any moment, either I will learn something mind-blowing or chaos will explode on screen.

[HipsterShiningArmor]

fun fact: factorials don't actually exist, your math teacher was just very excited about the number 6

[cheeseburgermonkey]

you honestly deserve more subs than 17.4k with this type of content in my opinion, 2 things i love are math and (occasionally) watching things collapse and crash and stuff, so mixing those together makes the perfect video for me. keep up the good work
Can't wait for comment bots to attack your comment sections though because that's definitely good and wont cause any harm whatsoever /j

[reecec]

Is anyone else loving the length time of this video? The sum of two cubes, twice!

[zeek]

I can't express how much I appreciate your hard work to present your unique perspective. Its enlightening hearing unique content. Thank you!

[RedRamDRA]

Glad you brought up playing cards, one of my most favorite math-in-action examples.
52! is a number so huge, it's like holding a small universe in your hands.

[berni_schmorg]

Goddam! Mister Domotro, you had me totally bamboozled there! I really thought i was getting myself into a factorial factory for a factorial fact tutorial but luckily it was Combo Class afterall...

[berni_schmorg]

HAHAHAHA at 15:49 I think domotro and I were making the EXACT same face at each other what

[hkayakh]

So there’s this kid in my math class that always sleeps
One day the teacher decides to call him out by asking him “Hey! What’s 5!”
Pretty simple.
The guy woke up and said “uhh 120”
And then fell back asleep