Current Events > Don't bother posting tricky math equations if you're not

(+) Yeah! (+)

going to bother format them more efficiently.

It's 10.
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https://www.youtube.com/watch?v=MS2aEfbEi7s
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Ex-Kefiroth posted...

why do people even use ÷?

To make 500 topics on GameFAQs.
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Is the answer 10? I am very bad at math because I very much dislike it
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Yup, badly formatted. The 2(3) is ambiguous because of its placement.
Either you multiply it and divide 36 by 6, or you divide 36 by 2 and multiply the result by 3.

Most people will get 10.
Pedants will insist that you follow PEMDAS and get 58.
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Don't bother posting tricky math equations

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Math is the easier shit in the world if the teachers are good at explaining the formulas. Once you have the formulas down you just take one step at a time solving the issue. The hard math questions are the story ones.
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I followed pemdas and got 58.

I'm kinda confused how people are getting 10 due to the formatting.
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itachi15243 posted...

I followed pemdas and got 58.

I'm kinda confused how people are getting 10 due to the formatting.

Probably due to 2(3) being closer together than it is 6^2. So you would go on the assumption that 2(3) is meant to be done before division due to how close it is.
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CaloFragilistic posted...

Pedants will insist that you follow PEMDAS and get 58.

I did and I still got 10. I was always taught that 2(3) is another way of writing multiplication.
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To get 58 shouldn't you have parentheses separating the 36 divided by 2

dave_is_slick posted...

CaloFragilistic posted...

Pedants will insist that you follow PEMDAS and get 58.

I did and I still got 10. I was always taught that 2(3) is another way of writing multiplication.

Division and Multiplication are given the same weight in PEMDAS. You work left to right. So you would have to do 36 / 2 before you multiply it to 3. Of course if it was (3 x 2) instead of 2(3) you would multiply it first.
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WhinyZach posted...

I seriously think the american education system failed. I was taught BEDMAS

Brackets always come first
then exponents
division and multiplication you do in order from left to right
same with addition and subtraction.

Just because the M comes before the D is pemdas doesn't mean you do multiplication before division IF the division is closer to the left.

Brackets are the same thing as Parenthesis in PEDMAS. It's literally the same system with a different name for Parenthesis.
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TC, your formatting is terrible. Putting the 2 right next to the (3) makes people think that they should multiply 2 by 3 and divide 36 (6 squared) by 6 instead of dividing 36 (6 squared) by 2 and multiplying that by 3
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Where is the trick?
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Tmaster148 posted...

dave_is_slick posted...

CaloFragilistic posted...

Pedants will insist that you follow PEMDAS and get 58.

I did and I still got 10. I was always taught that 2(3) is another way of writing multiplication.

Division and Multiplication are given the same weight in PEMDAS. You work left to right. So you would have to do 36 / 2 before you multiply it to 3. Of course if it was (3 x 2) instead of 2(3) you would multiply it first.

I swear, everytime I did a problem like that it was marked correct.
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Tmaster148 posted...

WhinyZach posted...

I seriously think the american education system failed. I was taught BEDMAS

Brackets always come first
then exponents
division and multiplication you do in order from left to right
same with addition and subtraction.

Just because the M comes before the D is pemdas doesn't mean you do multiplication before division IF the division is closer to the left.

Brackets are the same thing as Parenthesis in PEDMAS. It's literally the same system with a different name for Parenthesis.

6^2 =36/2=18*3=54+4= 58
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PEMDAS gives you 10
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dave_is_slick posted...

Tmaster148 posted...

dave_is_slick posted...

CaloFragilistic posted...

Pedants will insist that you follow PEMDAS and get 58.

I did and I still got 10. I was always taught that 2(3) is another way of writing multiplication.

Division and Multiplication are given the same weight in PEMDAS. You work left to right. So you would have to do 36 / 2 before you multiply it to 3. Of course if it was (3 x 2) instead of 2(3) you would multiply it first.

I swear, everytime I did a problem like that it was marked correct.

The problems you did where you have x(y) were probably formatted in a way where you would have to do it first.
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How are you guys getting a number out of a formula starting with sigma squared
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Tmaster148 posted...

dave_is_slick posted...

Tmaster148 posted...

dave_is_slick posted...

CaloFragilistic posted...

Pedants will insist that you follow PEMDAS and get 58.

I did and I still got 10. I was always taught that 2(3) is another way of writing multiplication.

Division and Multiplication are given the same weight in PEMDAS. You work left to right. So you would have to do 36 / 2 before you multiply it to 3. Of course if it was (3 x 2) instead of 2(3) you would multiply it first.

I swear, everytime I did a problem like that it was marked correct.

The problems you did where you have x(y) were probably formatted in a way where you would have to do it first.

No, I meant like that.
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The answer is 58, to destroy ambiguity rewrite it as 36 * 1/2 * 3 + 4, even if you don't do this theres no reason you shouldn't get 58.

robert21 posted...

https://www.youtube.com/watch?v=MS2aEfbEi7s

Now we have Saturday Night Live
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WhinyZach posted...

Tmaster148 posted...

WhinyZach posted...

I seriously think the american education system failed. I was taught BEDMAS

Brackets always come first
then exponents
division and multiplication you do in order from left to right
same with addition and subtraction.

Just because the M comes before the D is pemdas doesn't mean you do multiplication before division IF the division is closer to the left.

Brackets are the same thing as Parenthesis in PEDMAS. It's literally the same system with a different name for Parenthesis.

Everyone who gets these questions wrong was taught pemdas.

It's not PEMDAS fault, because you were taught the exact same system and yet come to the right conclusion anyways.
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If you enter

6^2 / 2(3) + 4

into a scientific calculator it gives you 58
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Isn't it technically 58? The spacing is intentionally misleading though. Lol. Another silly thing meant to troll people.
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robert21 posted...

https://www.youtube.com/watch?v=MS2aEfbEi7s

This is actually hilarious
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Damn_Underscore posted...

TC, your formatting is terrible. Putting the 2 right next to the (3) makes people think that they should multiply 2 by 3 and divide 36 (6 squared) by 6 instead of dividing 36 (6 squared) by 2 and multiplying that by 3

Format it so it's easier to understand.

I had a teacher literally tell me "if you don't know what the answer is on a standardized math test, put 0."
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Tmaster148 posted...

itachi15243 posted...

I followed pemdas and got 58.

I'm kinda confused how people are getting 10 due to the formatting.

Probably due to 2(3) being closer together than it is 6^2. So you would go on the assumption that 2(3) is meant to be done before division due to how close it is.

basically 6^2 = 6(6)

2(3) is its own multiplication.

division is another way of multiplying by the reciprocal, so you rewrite it to be more accurate like so:

[6(6) / 2] * 3 + 4
the brackets representing a fraction in this case.

that turns into 3(6) * 3 + 4

That can be written out as 18 * 3 + 4

Getting us 54 + 4 for 58

If you're ever confused about order of operations, just rewrite all division as multiplication of the inverse, and all subtraction as addition of a negative number. Typically clears up all confusion.
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6^2 = (6(6)) not 6(6)
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Damn_Underscore posted...

6^2 = (6*6) or (6)(6) not 6(6)

6(6) is a fundamentally equivalent statement to 6^2 for all algebraic context when observed in isolation.

you can even rewrite the equation as (6*6*3) / 2 and get the same result because you rewrote the ÷ 2(3) part as multiplying by the reciprocal of 2 which is then further multiplied by 3/1

exponents are shorthand for longform multiplication. it's so if I want to write something like 10^700 I don't have to write 10*10*10*10... (700 total times). They're an algebraically equivalent statement.

Division is shorthand for multiply by the reciprocal, and subtraction is shorthand for negate and sum.

You really only need 3 OOOs, PMA
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Zero_Destroyer posted...

robert21 posted...

https://www.youtube.com/watch?v=MS2aEfbEi7s

This is actually hilarious

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6(6) is correct by itself but when it is in a problem, it has to be (6(6)) or (6*6) or something with outside parentheses to separate it from the rest of the problem

6(6) is exactly the same as 6*6 and they are treated the same within a problem. (6(6)) is treated differently. For example

360 / 6(6) + 5 =
360 / 6 * 6 + 5 =
60 * 6 + 5 =
360 + 5 = 365

and

360 / (6(6)) + 5 =
360 / (36) + 5 =
10 + 5 = 15
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The answer is 58. Following the order of operations (3) is evaluating first which equals 3, since the brackets have disappeared it is necessary to write the term as 2*3 then of course exponents are evaluated. Then division and multiplication in the order they appear from left to right.

robert21 posted...

https://www.youtube.com/watch?v=MS2aEfbEi7s

Why isn't he like "FUCK YOU DON'T WRITE ON MY WALL THAT WILL BE $1 TO REPAINT!!!"
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My bad, it's 58

And I have a maths exam tomorrow <_<
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teepan95 posted...

My bad, it's 58

And I have a maths exam tomorrow <_<

I'm quite sure it won't have that stupid division sign in it. What class?
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scar the 1 posted...

teepan95 posted...

My bad, it's 58

And I have a maths exam tomorrow <_<

I'm quite sure it won't have that stupid division sign in it. What class?

Advanced Mathematics 2

Linear Algebra and ODEs

Plus a small bit of Fourier theory *eye-roll*
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Tmaster148 posted...

Brackets are the same thing as Parenthesis in PEDMAS. It's literally the same system with a different name for Parenthesis.

And it means to do everything INSIDE the brackets. All that's inside the brackets is the 3. 2(3) is 2*3.
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Sir Will posted...

Tmaster148 posted...

Brackets are the same thing as Parenthesis in PEDMAS. It's literally the same system with a different name for Parenthesis.

And it means to do everything INSIDE the brackets. All that's inside the brackets is the 3. 2(3) is 2*3.

Yes, but that's not the problem causing people getting 10. It's largely just the spacing in the problem. 2(3) is spread farther apart from the division sign which for some people think it means that it's important to do first.

This is pretty the case for every poorly formatted math equation you see on the internet. They are intentionally written so people will naturally go for the incorrect route.

EDIT: While 2(3) is technically a legal way to write 2 x 3 you will never see anyone write it that way, because it's not a very clear way to express 2 x 3 in a formula.
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Yeah, it's 58
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teepan95 posted...

scar the 1 posted...

teepan95 posted...

My bad, it's 58

And I have a maths exam tomorrow <_<

I'm quite sure it won't have that stupid division sign in it. What class?

Advanced Mathematics 2

Linear Algebra and ODEs

Plus a small bit of Fourier theory *eye-roll*

Need help just ask. I don't got all of it in my head, but I've tutored a lot of linear algebra. Sounds fun imo
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Tmaster148 posted...

It's largely just the spacing in the problem. 2(3) is spread farther apart from the division sign which for some people think it means that it's important to do first.

No, I'm taking care of the parentheses by getting rid of it. Which means multiplying it, not that I don't think you have to multiply first. All in the order of PEMDAS.
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dave_is_slick posted...

Tmaster148 posted...

It's largely just the spacing in the problem. 2(3) is spread farther apart from the division sign which for some people think it means that it's important to do first.

No, I'm taking care of the parentheses by getting rid of it. Which means multiplying it, not that I don't think you have to multiply first. All in the order of PEMDAS.

I'm saying what is likely the cause of people doing 2*3 first instead of 36 / 2. Most people have a basic understanding of PEMDAS in the sense they know that multiplication comes before addition and parentheses trumps all. But you can fool people with the right spacing and they'll do what looks like should be done first.
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scar the 1 posted...

teepan95 posted...

scar the 1 posted...

teepan95 posted...

My bad, it's 58

And I have a maths exam tomorrow <_<

I'm quite sure it won't have that stupid division sign in it. What class?

Advanced Mathematics 2

Linear Algebra and ODEs

Plus a small bit of Fourier theory *eye-roll*

Need help just ask. I don't got all of it in my head, but I've tutored a lot of linear algebra. Sounds fun imo

A bit late, since the exam is in 4 hours

But thanks anyway :)
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