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<3 (media.piefed.social)
submitted 10 months ago by Kierunkowy74@piefed.social to c/mathmemes
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[-] vaguerant@fedia.io 166 points 10 months 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 414 points 10 months ago* (last edited 10 months ago)

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

[-] vaguerant@fedia.io 124 points 10 months ago

Aha! Got it, thank you so much.

[-] Eyedust@lemmy.dbzer0.com 42 points 10 months ago

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

[-] jaybone@lemmy.zip 16 points 10 months 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 10 months ago* (last edited 10 months 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 10 months ago

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

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[-] BreadstickNinja@lemmy.world 15 points 10 months ago* (last edited 10 months 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!.

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[-] microphone900@lemmy.ml 58 points 10 months ago

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

[-] UnderpantsWeevil@lemmy.world 14 points 10 months ago

Totally missed that. Thank you.

[-] ArrantKnave@lemmy.world 19 points 10 months ago

4 factorial

[-] bleistift2@sopuli.xyz 17 points 10 months ago

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

[-] Zorque@lemmy.world 14 points 10 months 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 10 months ago* (last edited 10 months 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

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[-] stebo02@sopuli.xyz 136 points 10 months ago
[-] bleistift2@sopuli.xyz 86 points 10 months ago

Best math meme so far.

[-] j4k3@lemmy.world 35 points 10 months 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 10 months ago* (last edited 10 months 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 10 months ago

I believe you mean, "nice pun!"

[-] MBM@lemmings.world 9 points 10 months 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!

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[-] pixeltree 32 points 10 months ago

Comment section full of people looking for an opportunity to argue

[-] abbotsbury@lemmy.world 50 points 10 months ago
[-] petrol_sniff_king 20 points 10 months ago

Yes it is

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

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[-] faythofdragons@slrpnk.net 29 points 10 months ago

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

[-] faltryka@lemmy.world 29 points 10 months ago

Ok this is funny

[-] blind3rdeye@lemm.ee 24 points 10 months ago* (last edited 10 months 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 10 months ago

Thank God this meme is muted

[-] ShadowRam@fedia.io 21 points 10 months ago
[-] expatriado@lemmy.world 12 points 10 months ago

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

[-] casmael@mander.xyz 20 points 10 months 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 10 months 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.

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[-] stebo02@sopuli.xyz 15 points 10 months ago

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

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[-] jjjalljs@ttrpg.network 10 points 10 months 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 16 points 10 months ago

Sorry but what is unclear in OPs image?

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this post was submitted on 19 Jun 2025
848 points (100.0% liked)

Math Memes

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Memes related to mathematics.

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