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(Some Guy)   6/2(1+2) = 9 no no, 6/2(1+2) = 1 no no, 6/2(1+2) = 2   (mathmagical.co.uk) divider line 821
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30206 clicks; posted to Main » on 30 Mar 2012 at 9:56 AM (2 years ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2012-03-30 12:27:23 PM  
The proper way to solve this problem:

6
---- x (1 + 2)
2

=

6 3
---- x ---- (imagine the 3 and 1 are further over so they form a fraction of 3/1)
2 1

=

18
----
2

=

9
 
2012-03-30 12:27:53 PM  

SuperChuck: Phinn: If we're driving at a speed of eighty miles per hour, how many miles do we travel in one hour?

Holy crap. I am now dumber than I was before watching that.


Dear god! Stop watching immediately! You don't have any time to lose!
 
2012-03-30 12:28:07 PM  

dittybopper: Wait: Assuming we tax profits on a company at 10% for the sake of argument, how is it a "subsidy" when a company pays 10% of eleventy billion as opposed to 10% seventy billion? They are paying the same rate.


How is not paying taxes on 40 billion dollars a subsidy? Surly you can figure that out. Assuming your eleventy billion is 110 billion.


Also, implied in your assumption is that the increased taxes won't eventually be reflected in the retail price at the pump, which is ridiculous: Taxes are an expense, and as such they are built into the retail price. Raise the taxes, retail price is going to increase, or if market conditions are such that it can't do that, the company is going to recoup that cost in some other way, usually to the detriment of it's employees or customers.


Yeah, I'd like to say I came up with this opinion by my own ridiculous self but I heard it from some economists that the final effect on pump price would be in the range of a few cents. So I am not implying any assumption that taking away their tax breaks wont result in them passing the fun onto the consumer. That's what they are good at.
 
2012-03-30 12:31:16 PM  
I've taken a dozen college level math classes and 350 comments in this thread made me reconsider whether I really learned anything. Honest to go, I had a differential equation jump out of my computer monitor and slap me in the face.
 
2012-03-30 12:32:08 PM  
I'm glad to see that my crappy Andoid calculator app does get it right.
 
2012-03-30 12:34:59 PM  
TWO EXPLAINED

6/2(1 = ERROR, since it is not proper mathematical syntax. The then reads the last proper mathematical syntax entered into, +2.

2 is the correct answer according to the old math practiced by mankind for the past several thousand years.
 
2012-03-30 12:35:28 PM  
As Barbie says, "Math is hard!"
 
2012-03-30 12:36:03 PM  

TNel: The problem is the stupid / symbol.


It's all well and good that you think that the "/" symbol is confusing but in real life, such as construction/electrical/engineering code, the equations are going to use "/" for division and you need to know how to read those equations.

/if you're building a bridge the difference between 1 and 9 could be important
 
2012-03-30 12:36:50 PM  
Yes! I was right! Woo hoo! 5 years of engineering school FINALLY pays off!!! Suck it, Liberal Arts majors!
 
2012-03-30 12:37:30 PM  

jeanwearinfool: That's nothing. I took my son to an arcade and when he was cashing out his tickets (he had 63) he bought something that cost 60 tickets. The cashier busted out a calculator to find the difference.


I recently bought a 4' length of tubing at the hardware store. A clerk cut the tubing, stuck on a label, and scribbled on the length and the item code with terrible penmanship.

At the checkout counter, the cashier picked up the tubing, stared at the label for 30 seconds, and said, "I can't tell if this is 41 feet or 14 feet." She was holding one end of the tube in each hand.
 
2012-03-30 12:37:43 PM  
came for the I can count to potato meme. leaving sorely disappoint.
 
2012-03-30 12:38:27 PM  

impaler: Lsherm: impaler: Order of operation means
6/2*3 = 9
6/(2*3) = 1

No.

Take a math course sometime moron.


Take an English class sometime, moron.
 
2012-03-30 12:38:37 PM  

mod3072: Yes! I was right! Woo hoo! 5 years of engineering school FINALLY pays off!!! Suck it, Liberal Arts majors!


Yeah, but can you draw pictures in the foam on my latte?
 
2012-03-30 12:39:16 PM  

BurnShrike: SuperChuck: Phinn: If we're driving at a speed of eighty miles per hour, how many miles do we travel in one hour?

Holy crap. I am now dumber than I was before watching that.

Dear god! Stop watching immediately! You don't have any time to lose!


Jesus Christ that is genius! LMAO!
 
2012-03-30 12:39:47 PM  

sxacho: 5318008


ISWYDT.

/That was in a Big Bang rerun last night.
 
2012-03-30 12:42:21 PM  
I certainly hope NASA engineers aren't walking around with iPhones
 
2012-03-30 12:42:27 PM  

suburbanguy: sxacho: 5318008

ISWYDT.

/That was in a Big Bang rerun last night.


Wait, you mean to tell me that they rerun episodes of that show? Why?
 
2012-03-30 12:44:48 PM  

NateAsbestos: suburbanguy: sxacho: 5318008

ISWYDT.

/That was in a Big Bang rerun last night.

Wait, you mean to tell me that they rerun episodes of that show? Why?


Because it's funny as hell and if you don't think so you probably got '2' as the answer.
 
2012-03-30 12:45:46 PM  

Swiss Colony: NateAsbestos: suburbanguy: sxacho: 5318008

ISWYDT.

/That was in a Big Bang rerun last night.

Wait, you mean to tell me that they rerun episodes of that show? Why?

Because it's funny as hell and if you don't think so you probably got '2' as the answer.


Actually I got 17. But I'm clearly a dumbass because I don't like The Big Bang Theory
 
2012-03-30 12:46:07 PM  

Voiceofreason01: if you're building a bridge the difference between 1 and 9 could be important


Put the calculators down people, the answer is 8. You may now go back to your bridge building.
 
2012-03-30 12:46:16 PM  
I'm sending a jug of fermented monkey sh*t to the next person that claims Order of Operations is in any way ambiguous.

/parentheses simply make it easier to read more quicker; they don't affect ambiguity
//the rules are as unambiguous as anything you'll find in your short time on earth
/revel in the glee
 
2012-03-30 12:47:04 PM  
erm... *read more, and quicker

/which is probably incorrect
//no thanks to ambiguity TROLOLO
 
2012-03-30 12:48:21 PM  
wow, i screwed that up to all hell. :/ someone hold me
 
2012-03-30 12:48:45 PM  
Eddie Adams from Torrance

Play Numberwang here! (new window)
 
2012-03-30 12:50:06 PM  

NateAsbestos: Swiss Colony: NateAsbestos: suburbanguy: sxacho: 5318008

ISWYDT.

/That was in a Big Bang rerun last night.

Wait, you mean to tell me that they rerun episodes of that show? Why?

Because it's funny as hell and if you don't think so you probably got '2' as the answer.

Actually I got 17. But I'm clearly a dumbass because I don't like The Big Bang Theory


Admitting you have a problem is the first step.
 
2012-03-30 12:51:37 PM  

dittybopper: Just to show I'm not a complete luddite, TI-84 Plus also gets it right:


My TI-85 gets it wrong, 1.
My Android gets it right, 9.

How the fark did the iPhone get 2?
 
2012-03-30 12:54:31 PM  

suburbanguy: NateAsbestos: Swiss Colony: NateAsbestos: suburbanguy: sxacho: 5318008

ISWYDT.

/That was in a Big Bang rerun last night.

Wait, you mean to tell me that they rerun episodes of that show? Why?

Because it's funny as hell and if you don't think so you probably got '2' as the answer.

Actually I got 17. But I'm clearly a dumbass because I don't like The Big Bang Theory

Admitting you have a problem is the first step.


A problem? Boyo I find it amazing I am still breathing, some days.
 
2012-03-30 12:56:58 PM  

Voiceofreason01: TNel: The problem is the stupid / symbol.

It's all well and good that you think that the "/" symbol is confusing but in real life, such as construction/electrical/engineering code, the equations are going to use "/" for division and you need to know how to read those equations.

/if you're building a bridge the difference between 1 and 9 could be important


If I was building a bridge or even in a class and this problem came up I would ask them where the other set of brackets go.
 
2012-03-30 12:57:06 PM  

BurnShrike: mod3072: Yes! I was right! Woo hoo! 5 years of engineering school FINALLY pays off!!! Suck it, Liberal Arts majors!

Yeah, but can you draw pictures in the foam on my latte?


No, but I can spit on your Big Mac.
 
2012-03-30 12:59:09 PM  
After reading this thread I know understand why I get so frustrated talking economics (or most anything) here on FARK.

The majority of you can't do basic math.

Thank god some of you are least funny.
 
2012-03-30 12:59:27 PM  

Meet Us at the Stick: optikeye: a poorly presented equation is open to interpretations.

As it's written in the headline it's not poorly presented at all

6/2(1+2)

Order of Operation says perform the operation in parentheses first

6/2(3)

Now since the only operations left are division and multiplication, perform those from left to right

6/2 = 3

So we are left with

3(3) = 9

It couldn't be more clear.


I could have sworn that you were supposed to deal with the inside of the parenthesis first, then the outside, then the multiplication/division from left to right, then the addition/subtraction.

But, it's been 20 years, and I was in honors classes so everyone was just coasting through and using their calculators anyway.
 
kgf
2012-03-30 01:00:12 PM  
the half of that teacher's class that said "1" shoud be instantly failed. A 6th grader knows how to do that equation.
 
2012-03-30 01:00:38 PM  

poughdrew: dittybopper: Just to show I'm not a complete luddite, TI-84 Plus also gets it right:

My TI-85 gets it wrong, 1.
My Android gets it right, 9.

How the fark did the iPhone get 2?


.
.
2 really is the correct answer. See my above explanation.
 
2012-03-30 01:00:47 PM  
The answer is 3, pretty much "period."

However, the real answer is better said by Vi Hart.
 
2012-03-30 01:00:49 PM  
I tried it in the sql server client
Attempt 1: Select 6/2(1+2) - got an error
Attempt 2: Select 6/2*(1+2) - 9

So at least with sql server it needs the *
 
2012-03-30 01:02:03 PM  
If I'm going to get wrong answers to my mathematical queries, I might as well do it in style:
30.media.tumblr.com
Calculate large sums with nature's most mythical beast.
 
2012-03-30 01:05:22 PM  
It's 9.

Also, people very write out the * when doing equations by hand. The star requirements more strokes than () around your numbers. As in:

2(3) is easier to hand write that 2*3. 2 x 3 is of course just a no go since x is the default variable. So x as an operator is just plain out. The dot is also legit, but not as popular (since it is easier to miss).
 
2012-03-30 01:06:14 PM  

mod3072: BurnShrike: mod3072: Yes! I was right! Woo hoo! 5 years of engineering school FINALLY pays off!!! Suck it, Liberal Arts majors!

Yeah, but can you draw pictures in the foam on my latte?

No, but I can spit on your Big Mac.


Is that a euphemism? Are you coming on to me?
 
2012-03-30 01:07:57 PM  

trappedspirit: dittybopper: Wait: Assuming we tax profits on a company at 10% for the sake of argument, how is it a "subsidy" when a company pays 10% of eleventy billion as opposed to 10% seventy billion? They are paying the same rate.


How is not paying taxes on 40 billion dollars a subsidy? Surly you can figure that out. Assuming your eleventy billion is 110 billion.


Hot dog vendors don't pay tax on their cost of hot dogs. Why not? Why should we be subsidizing wieners?
 
2012-03-30 01:09:22 PM  
Why has the US accomplished anything in the field of engineering in a generation? What could it be? Hmm.
 
2012-03-30 01:09:57 PM  

suburbanguy: impaler: Lsherm: impaler: Order of operation means
6/2*3 = 9
6/(2*3) = 1

No.

Take a math course sometime moron.

Take an English class sometime, moron.


Am I correct in assuming you are mocking him for not using a comma there? Because if so, I don't think anyone has Grammar-Nazi-ed as must as you just did. Ever.
 
2012-03-30 01:11:49 PM  

ha-ha-guy: It's 9.

Also, people very write out the * when doing equations by hand. The star requirements more strokes than () around your numbers. As in:

2(3) is easier to hand write that 2*3. 2 x 3 is of course just a no go since x is the default variable. So x as an operator is just plain out. The dot is also legit, but not as popular (since it is easier to miss).


When writing by hand I always use the dot. Not in front of parentheses though.
2 · 3
2(3)
 
2012-03-30 01:12:33 PM  

Nutsac_Jim:

Hot dog vendors don't pay tax on their cost of hot dogs. Why not? Why should we be subsidizing wieners?


Because they are buying them for resale and if you buy for resale you don't pay tax on the item until you sale it.
 
2012-03-30 01:15:00 PM  
300 and something posts and not one '1+1+1+1+1' clip from "Clue"?
 
2012-03-30 01:18:30 PM  

SkittlesAreYum: suburbanguy: impaler: Lsherm: impaler: Order of operation means
6/2*3 = 9
6/(2*3) = 1

No.

Take a math course sometime moron.

Take an English class sometime, moron.

Am I correct in assuming you are mocking him for not using a comma there? Because if so, I don't think anyone has Grammar-Nazi-ed as must as you just did. Ever.


I wouldn't have said anything if he weren't so snarky.
 
2012-03-30 01:20:16 PM  

Swiss Colony: OK, I just got 2. If you type this into the Window's calculator without the implied multiplication you get 2.

6,/,2,(,1,+,2,),=

I've no idea what it does between the 2 and the opening bracket though.


It calculates as you go, and it treats operators and brackets differently. These calculators weren't really intended to be expression builders. Not even in "scientific" mode, for some reason.

On the Windows 7 calc (I don't have an iPhone) type in 6/(1+2) (or 6/2(1+2), doesn't matter)) and you instantly get 3. Then when you hit enter you get 2. This is because the brackets are treated, in true PEMDAS fashion, as a first-calculate-me term, like a substitute expression for a number, and not like implied multiplication. I.e., it wasn't programmed to recognize the dual use of the brackets, so it ignores the extra "2" it was supposed to multiply by - it just stops recognizing it as a user inputted number the instant it sees that bracket.
 
2012-03-30 01:25:06 PM  

Meet Us at the Stick: optikeye: a poorly presented equation is open to interpretations.

As it's written in the headline it's not poorly presented at all

6/2(1+2)

Order of Operation says perform the operation in parentheses first

6/2(3)

Now since the only operations left are division and multiplication, perform those from left to right

6/2 = 3

So we are left with

3(3) = 9

It couldn't be more clear.


Came to say this, This is the only and right way to do this problem as it is written in the headline, Period. There is no interpretations needed.
 
2012-03-30 01:26:59 PM  

BurnShrike: SoothinglyDeranged: Meet Us at the Stick: Confabulat: I don't know what's going on here but it frightens and confuses me.

PEMDAS, my friend

I was taught it as BEDMAS, but yeah, same basic principle.

Technically it's BEDMAS. The P stands for "parentheses" which are grammatical symbols. "Brackets" are the mathematical name for the equivalent symbols.



Uh, no, there is no reason why "brackets" is any more correct a term than "parentheses." Maybe one's British English and the other is American English, I don't know, but neither is wrong.

Also, the question of whether 6÷2(1+2)=1 or 9 is one of notation, not math. Neither answer is more MATHEMATICALLY correct. Much like how 4+4=8 in base ten, but 4+4=10 in base eight.

Which is why Christmas and Halloween are really the same holiday, if you're a computer science major.
 
Bf+
2012-03-30 01:27:43 PM  

SkittlesAreYum: must


moran.

/I keed.
 
2012-03-30 01:28:49 PM  

trappedspirit: dittybopper: Wait: Assuming we tax profits on a company at 10% for the sake of argument, how is it a "subsidy" when a company pays 10% of eleventy billion as opposed to 10% seventy billion? They are paying the same rate.


How is not paying taxes on 40 billion dollars a subsidy? Surly you can figure that out. Assuming your eleventy billion is 110 billion.


The rate is the same. You do know what a rate is, right?

If a company that made $70 billion in year 1 and payed a tax rate of 10%, that means it payed $700 million in taxes.
If the company then made $110 billion the next year, and payed a tax rate of 10%, that means it payed $1.1 billion in taxes.

The difference between the two (1.1b - 700m = 400m) doesn't mean that the company got a subsidy on the taxes in year one, nor does it mean that because the company gets to keep 99 billion in year two, an increase in after tax profit of (99-63) = $36 billion that that constitutes a tax subsidy either for year two.

In both cases, they paid the same rate.

Also, implied in your assumption is that the increased taxes won't eventually be reflected in the retail price at the pump, which is ridiculous: Taxes are an expense, and as such they are built into the retail price. Raise the taxes, retail price is going to increase, or if market conditions are such that it can't do that, the company is going to recoup that cost in some other way, usually to the detriment of it's employees or customers.

Yeah, I'd like to say I came up with this opinion by my own ridiculous self but I heard it from some economists that the final effect on pump price would be in the range of a few cents. So I am not implying any assumption that taking away their tax breaks wont result in them passing the fun onto the consumer. That's what they are good at.


So it is still an increase, right? Just a few cents?

OK, let's put this into concrete numbers. Let's say it raises the price of a gallon of gas by 5 cents. I drive roughly 360 miles a week between commuting and other stuff, and my car gets about 36 miles per gallon. In a typical week, I therefore go through 10 gallons of gas. That increase is now about $0.50 a week. Over the course of a year, that's $26 extra in taxes I'd be paying.

Actually more: My wife also drives her car, roughly 100 miles a week, or 5,200 miles a year. Her car only gets 30 miles per gallon, so add another ~9 to that. I'd be paying an extra $35 a year in taxes. On top of the $467 I already pay per year in gas taxes*. That pushes my gasoline taxes over the $500 mark.

Now, if you walked up to me and said "Pay an extra $35 in taxes", I'd tell you to buzz off. Why shouldn't I tell you to buzz off just because you're taking the same amount in tiny slices, a little bit at a time?

*NYS gas customers pay 67.4 cents per gallon in taxes, the distaffbopper and I consume ~693 gallons of gasoline per year.


Now, if you walked up to me and said "Pay an extra $35 in taxes", I'd tell you to buzz off.
 
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