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 :)

Abnorc,

Don’t forget math with fruits! imgur.com/JOuRhQ3

wischi, (edited )

Just saw the image you posted and it’s awesome :-) I’m part of the group that can’t solve it, because I don’t know the 🌭 function from the top of my head. I also found the choice of symbols interesting that 🌭 is analytical continuation of 🍔 and not the other way round 🤣

doctorn, (edited )
@doctorn@r.nf avatar

I don’t see the problem actually.

  1. Everything between ()
  2. Exponents
  3. multiply and devision
  4. plus and minus
  5. Always work from left to right.

==========

  1. 1+2= 3
  2. No exponents
    • 6 devised by 2 (whether a fraction or not) is 3
    • 3 times 3 is 9
  3. Nothing remains
Th4tGuyII,
@Th4tGuyII@kbin.social avatar

The meme refers to the problem of handling implicit multiplication by juxtaposition.
Depending on what field you're in, implicit multiplication takes priority over explicit multiplication/division (known as strong juxtaposition) rather than what you and a lot of people would assume (known as weak juxtaposition).

With weak juxtaposition you end up 9 just as you did, but with strong juxtaposition you end up with 1 instead.

For most people and most scenarios this doesn't matter, as you'd never encounter such ambiguous equations outside of viral puzzles like this, but it is worth knowing that not all fields agree on how implicit multiplication is handled.

doctorn, (edited )
@doctorn@r.nf avatar

Humans…

Can agree over a universal charging cable, but not over simple math rules…

Th4tGuyII,
@Th4tGuyII@kbin.social avatar

Truly the dichotomy of man

jordanlund,
@jordanlund@lemmy.world avatar

Interesting that Excel sees =6/2(1+2) as an invalid formula and will not calculate it (at least on mobile). =6/2*(1+2) returns 9 because it’s executing the division and multiplication left to right (6/2=3*3=9).

Google Sheets (mobile) does’t like it either and returns an error. =6/2*(1+2) also returns “9”.

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