842
<3 (media.piefed.social)
submitted 1 month ago by Kierunkowy74@piefed.social to c/mathmemes
top 50 comments
sorted by: hot top controversial new old
[-] vaguerant@fedia.io 165 points 1 month ago

I understand why this is wrong (order of operations dictates the division happens first, so it's really 25 - 1 = 24), but why is it funny? I don't mean "This isn't funny," I think I'm just missing the joke.

[-] Thekingoflorda@lemmy.world 413 points 1 month ago* (last edited 1 month ago)

4! Is meant to be 4 factorial. 4! = 4 x 3 x 2 x 1 = 24

[-] vaguerant@fedia.io 124 points 1 month ago

Aha! Got it, thank you so much.

[-] Eyedust@lemmy.dbzer0.com 42 points 1 month ago

And here I was thinking I was still decent at math. I got bamboozled...

[-] jaybone@lemmy.zip 16 points 1 month ago

Or if you don’t know order of operations, then you probably also don’t know factorials, so 20 / 5 = 4

[-] Psythik@lemmy.world 11 points 1 month ago* (last edited 1 month ago)

The fuck is a "factorial"? They didn't teach me that one in high school math and I couldn't afford college.

[-] Dearth@lemmy.world 23 points 1 month ago

Im sorry your highschool curriculum failed to teach you. I learned factorals in jr highschool

load more comments (4 replies)
[-] BreadstickNinja@lemmy.world 15 points 1 month ago* (last edited 1 month ago)

Factorial means n! = (n)(n-1)(n-2)... etc. down to 1, where n is a positive integer. It's used to calculate the different number of configurations of a set of elements, mainly in combinatorics.

Like if you have four different objects and you want to know how many different configurations you can order them in, you have four choices for the first object, then three for the second, then two for the third, then one for the final slot. So the answer is 4 x 3 x 2 x 1 = 24 = 4!.

load more comments (5 replies)
load more comments (2 replies)
[-] microphone900@lemmy.ml 58 points 1 month ago

4! Is a factorial which means it's 4 x 3 x 2 x 1 = 24

[-] UnderpantsWeevil@lemmy.world 14 points 1 month ago

Totally missed that. Thank you.

[-] ArrantKnave@lemmy.world 19 points 1 month ago

4 factorial

[-] bleistift2@sopuli.xyz 17 points 1 month ago

The exclamation point denotes the factorial function. 4! = 4 ⋅ 3 ⋅ 2 ⋅ 1

[-] Zorque@lemmy.world 14 points 1 month ago

I see no one has explained yet, so I'll give it a shot. He is excited about math, and that needs to be encouraged.

[-] Mastema@infosec.pub 12 points 1 month ago* (last edited 1 month ago)

The exclamation point makes it right. The formula, when worked with proper order of operations, equals 24, which is equal to 4 factorial (4!) 1 * 2 * 3 * 4=24

load more comments (6 replies)
[-] stebo02@sopuli.xyz 136 points 1 month ago
[-] bleistift2@sopuli.xyz 86 points 1 month ago

Best math meme so far.

[-] j4k3@lemmy.world 35 points 1 month ago

ASCII hack failure of language. Even in mathematics, ! has multiple meanings like with Boolean NOT. We need a science, math, and language reformation to remove non intuitive narcissistic names, and implied contextual meanings.

[-] davidgro@lemmy.world 20 points 1 month ago* (last edited 1 month ago)

You might find Lojban interesting if you are not already aware. (I haven't tried to learn it myself, I just know it exists)

[-] jsomae@lemmy.ml 14 points 1 month ago

I believe you mean, "nice pun!"

[-] MBM@lemmings.world 9 points 1 month ago

I've never seen ! used for boolean NOT in maths, just ¬. I think ! is something programming languages went for because it's easier to type. That said, screw (a, b). Is that a (coordinate) pair, an interval, an inner product, some secret fourth thing? Who knows!

load more comments (1 replies)
[-] pixeltree 32 points 1 month ago

Comment section full of people looking for an opportunity to argue

[-] abbotsbury@lemmy.world 50 points 1 month ago
[-] petrol_sniff_king 20 points 1 month ago

Yes it is

Wait, will this be the 5-minute or the half hour?

load more comments (3 replies)
load more comments (1 replies)
[-] faythofdragons@slrpnk.net 29 points 1 month ago

You got the wrong symbol in the headline, it should be >3

[-] faltryka@lemmy.world 29 points 1 month ago

Ok this is funny

[-] blind3rdeye@lemm.ee 24 points 1 month ago* (last edited 1 month ago)

This is quite possibly the best maths joke I've ever seen.

[edit] I guess it still can't beat the 'be rational' / 'get real' one.

[-] gofsckyourself@lemmy.world 22 points 1 month ago

Thank God this meme is muted

[-] ShadowRam@fedia.io 21 points 1 month ago
[-] expatriado@lemmy.world 12 points 1 month ago

for those that didn't get it: clever factorial = brilliant

[-] casmael@mander.xyz 20 points 1 month ago

I’m only going to say this once but if I’m doing a sum and you want me to do it in a specific order, use brackets. That’s what brackets are for. Don’t expect me to do things in a predetermined order because I literally can’t be bothered and I will never care enough to do that. I’m already doing a sum so don’t push it, okay bud

[-] AFKBRBChocolate@lemmy.ca 31 points 1 month ago

But that's a bit like saying "If you're going to talk to me, put the adjectives before the nouns," even in Spanish where they come after. Mathematical notation is a language and it has a syntax. Sure, you can decide to ignore that syntax, or insist that people modify their use of it for you, but it's not really a reasonable expectation.

load more comments (3 replies)
[-] stebo02@sopuli.xyz 15 points 1 month ago

well then you should stop doing math cuz you're doing it wrong

load more comments (1 replies)
[-] jjjalljs@ttrpg.network 10 points 1 month ago

Jokes and tricks that hinge on unclear communication (eg: not using parenthesis or other notation to make intent clear), and then are smug when people are tricked, remind me of the old xkcd https://xkcd.com/169/

I just saw some jokes about factorials so at least I got this one, heh.

[-] kameecoding@lemmy.world 15 points 1 month ago

Sorry but what is unclear in OPs image?

load more comments (16 replies)
load more comments
view more: next ›
this post was submitted on 19 Jun 2025
842 points (100.0% liked)

Math Memes

2686 readers
2 users here now

Memes related to mathematics.

Rules:
1: Memes must be related to mathematics in some way.
2: No bigotry of any kind.

founded 2 years ago
MODERATORS