6÷2(1+2)

zeta.one/viral-math/

I wrote a (very long) blog post about those viral math problems and am looking for feedback, especially from people who are not convinced that the problem is ambiguous.

It’s about a 30min read so thank you in advance if you really take the time to read it, but I think it’s worth it if you joined such discussions in the past, but I’m probably biased because I wrote it :)

Prunebutt,

If you are so sure that you are right and already “know it all”, why bother and even read this? There is no comment section to argue.

I beg to differ. You utter fool! You created a comment section yourself on lemmy and you are clearly wrong about everything!

You take the mean of 1 and 9 which is 4.5!

/j

SpaceNoodle,

Right, because 5 rounds down to 4.5

Lionel,

…Because 4 rounds up to 4.5

wischi,

@Prunebutt meant 4.5! and not 4.5. Because it’s not an integer we have to use the gamma function, the extension of the factorial function to get the actual mean between 1 and 9 => 4.5! = 52.3428 which looks about right 🤣

Prunebutt,

Not sure if sarcastic and woosh, or adding to the joke ಠ_ಠ

Redjard,
@Redjard@lemmy.dbzer0.com avatar

The mean of 1 and 9 is 5

Prunebutt,

woosh

Sidhean,

Stop it Patrick, you’re scaring them!

stu,

I think you got hit hard by Poe’s Law here. Except it’s more like people couldn’t tell if you were jokingly or genuinely getting your math wrong… Even after you explained you were joking lol

Prunebutt,

I thought the “/j” tone-tag was enough ;_;

Redjard,
@Redjard@lemmy.dbzer0.com avatar

If one doesn’t realize you’re op, the entire thing can be interpreted very differently.
Then “Not sure if sarcastic and woosh, or adding to the joke ಠ_ಠ” could be interpreted as something like “I’m not sure if you are adding to the joke and I’m not understanding it”.

SpaceNoodle,

jarcasm?

Prunebutt, (edited )
wischi,

🤣 I wasn’t even sure if I should post it on lemmy. I mainly wrote it so I can post it under other peoples posts that actually are intended to artificially create drama to hopefully show enough people what the actual problems are with those puzzles.

But I probably am a fool and this is not going anywhere because most people won’t read a 30min article about those math problems :-)

Prunebutt,

I did (skimmed it, at least) and I liked it. 🙃

relevants, (edited )

Actually the correct answer is clearly 0.2609 if you follow the order of operations correctly:

6/2(1+2)
= 6/23
= 0.26

wischi,

🤣 I’m not sure if you read the post but I also wrote about that (the paragraph right before “What about the real world?”)

relevants, (edited )

I did read the post (well done btw), but I guess I must have missed that. And here I thought I was a comedic genius

MrVilliam, (edited )

Nah man, distribute the 2.
6/2(1+2)
= 6/2+4
= 3+4
= 7

This is like 4st grayed maff.

Th4tGuyII,
@Th4tGuyII@kbin.social avatar

@relevants you truly are the smartest of all men

Samsy, (edited )

I really hate the social media discussion about this. And the comments in the past teached me, there are two different ways of learning math in the world.

wischi, (edited )

True, and it’s not only about learning math but that there is actually no consensus even amongst experts, about the priority of implicit multiplications (without explicit multiplication sign). In the blog post there are a lot of things that try to show why and how that’s the case.

octesian, (edited )

I don’t remember everything, but I remember the first two operations are exponents then parentheses. Edit: wait is it the other way around?

wischi,

Yes it’s the other way round. Parentheses are top priority.

wischi,

The full story is actually more nuanced than most people think, but the post is actually very long (about 30min) so thank you in advance if you really find the time to read it.

usernamesaredifficul,

bidmas

brackets, index (powers), division, multiplication, addition, subtraction.

brackets are always first that’s the whole point of brackets

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