/sci/ - Science & Math

how the fuck would someone think the answer it 1? goddamn

Before everyone trolls you, yes it is 9. Your friend is stupid.

I'm sure this amuses /b/.

its 0

>Use purposefully ambiguous notation
>Get mad when people disagree on how to parse it

>>4566660
actually, it caused quite a shitstorm on facebook 'cause some bitch posted it

It's not really a matter of stupidity but more a confusion over the game of application of symbolic operators.

Some people don't realize that division and multiplication functions are on the same "application level" and that to break the tie one "scans" the equation from left to right.


Instead of being dismissive, just explain these rules as common scientific and mathematical usage and you'll gain a "sage" respect.

The answer is "Real math doesn't use the symbol <span class="math">\div[/spoiler], and there's a reason for it."
Any other answer is wrong.

>>4566672
So much this.

>>4566659
Because no one knows the order of operations?

>>4566671
well, that and PEMDAS, so the parenthesis stuff obviously goes first, just saying

>>4566666

(6/2)*(1+2)=?

How fucking hard is it.

[$]\frac{2}{2(1+2)}[/$]

Is Aus we have BOMDAS.

>>4566659
The non-dot multiplication has priorty over the / in most calculator, in that case the answer is 1. It's just a matter of convention.

>>4566683
the FUCK is wrong with you nigger? if there are no parenthesis present, you just don't make your own, dumbfuck

Math major here:
>6/2(1+2)
>6/2(3)
>3(3)
>9
you're welcome, you cretins.

>>4566683

6/(2(1+2))

>>4566699
That would be argument from authority, a fallacy. What you posted is not true because you are math major, but because you performed the operations in compliance with their defined order of priority.

>>4566699
Too bad you got the answer wrong. For the correct answer, see >>4566672
You should know this if you actually do math.

1 if you take it at face value.
9 if you interpret it as 6/2(1+2)

>>4566687
>enter the whole thing in a calculator
>why.jpg

>>4566712

>>4566699
>implying one needs to be a math major to solve this
It is fucking 9 though. End of story.

>>4566713
I didn't even inputed it in a calculator, i just read the calculators' manual. And my point was still, it's just a matter of convention.

That has to be a trick question, right? There's no fucking way...

>>4566730
2.

>>4566666
FUCKING THIS!!!

>>4566647

>this whole fucking thread

>>4566730 also, OP here, no, this is not a trick question, I'm dead serious about this

>>4566730
If someone thinks that addition has higher priority than subtraction (which is dumb) then they might interpret that as -4.

>>4566755
Well it's not only dumb, it's also wrong. They'd "interpret" the answer wrongly.

>>4566742
saved, in anticipation of future use

>>4566760
Well it's an effect of learning mnemonics like 'PEMDAS' and other shit instead of actually understanding.

<span class="math">6/2(1+2) \neq \frac{6}{2(1+2)}[/spoiler]

>>4566774
>Well it's an effect of learning mnemonics like 'PEMDAS' and other shit instead of actually understanding.
What the fuck is there to understand? Order of operations is arbitrary shit we just made up.

>>4566742
I dont get it...

>>4566774
>instead of actually understanding
Isn't the order of operations/pemdas just the arbitrarily agreed upon method? I didn't think there was anything deeper to understand than "because that's just it was decided upon to do it."

>>4566801
What is the third word in "the English language"?

>>4566807
okay, got it. I should have paid attention to the the other boxes closely.

>>4566807
Then his first and second statement are false. No words in "the English Language" end in gry, and neither angry nor hungry appear in "the English Language". The guy's just being a retard. It's not an error in communication, the guy's just a retard.

>>4566803
in some sense it's just arbitrary notation, yes

one should understand though, that the addition and subtraction has equal priority because they are the same operation. subtraction is addition with the additive inverse of an element.
a - b = a + (-b) where -b is notation for the additive inverse to b.
as such, subtraction does not exist as a binary operation of it's own

same with multiplication and division

>>4566825
That's because Randall Munroe fucked the question up. From the internet:
>Think of words ending in "-gry". "Angry" and "hungry" are two of them. There are only three words in "the English language." What is the third word?

>6 2 / 1 2 + *
>3 1 2 + *
>3 3 *
>9

>>4566850
This.

Still a shitty riddle.

>>4566793
>>4566803
I assume he meant something about how "there is no such thing as subtraction" or some such.

>>4566686
>BOMDAS
>barentheses
>oxponents
>mivision, dultiplication
>addition, subtraction

You also have chaswosers in the lifts and the lorries, in the bond wizard, and all over the malonga gilderchuck.