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-   -   Come on Math wizards 48÷2(9+3) = ??? (https://gfy.com/showthread.php?t=1020360)

FlexxAeon 04-28-2011 03:36 PM

Quote:

Originally Posted by vano (Post 18094767)

:error :1orglaugh

Quote:

Originally Posted by Joxxy (Post 18094809)
Guess I lost my Asian "math" cred. Very dishonorable.
Mind=blown

breaking news: black guy gets math right while asian guy gets it wrong!

divide by zero and end the world now!

kristin 04-28-2011 03:37 PM

Quote:

Originally Posted by WarChild (Post 18094794)
What is making you do the multiplciation BEFORE division even though it comes afterwards when reading left to right?

Because you have to foil ... so anything with N(X+Y) goes first. So you get NX+NY.

TheDoc 04-28-2011 03:37 PM

Quote:

Originally Posted by Phoenix (Post 18094815)
its ok..you are an awesome golfer

its enough :)

Speaking of golf.... hit me up.

Phoenix 04-28-2011 03:39 PM

Quote:

Originally Posted by WarChild (Post 18094817)
You're talking about implied multiplication vs explicit in over riding the standard order of operations. There's no consensus on this, however, among even Mathemeticians. So how can you show "proof" of this when there's no agreement?

If you're following the standard order of operations the answer is 288.


in order for something to be True
it must hold for all numbers
substitute the 2 with a variable...say z

and see if you still leave it alone :)

WarChild 04-28-2011 03:45 PM

Quote:

Originally Posted by Phoenix (Post 18094824)
in order for something to be True
it must hold for all numbers
substitute the 2 with a variable...say z

and see if you still leave it alone :)

Sorry, not going to bite anymore on a badly written problem. There's no steadfast rule that elevates the priority of implied multiplication over explicit. It's a good troll though reading through some of the comments and what not on the knowyourmeme page.

moeloubani 04-28-2011 03:50 PM

Quote:

Originally Posted by Phoenix (Post 18094824)
in order for something to be True
it must hold for all numbers
substitute the 2 with a variable...say z

and see if you still leave it alone :)

lol what?

the answer is 288

if you think it's any different then you're reading the question wrong

the way it's written the answer = 288

uno 04-28-2011 03:51 PM

Quote:

Originally Posted by Phoenix (Post 18094651)
haha many wouldn't take part if it was

look bryan declared he likes robot chicken ;)

Oh come on. Who doesn't like Robot Chicken?

Phoenix 04-28-2011 03:54 PM

Quote:

Originally Posted by WarChild (Post 18094837)
Sorry, not going to bite anymore on a badly written problem. There's no steadfast rule that elevates the priority of implied multiplication over explicit. It's a good troll though reading through some of the comments and what not on the knowyourmeme page.



its 2

trust me
you can prove it to yourself

uno 04-28-2011 03:56 PM

Quote:

Originally Posted by Phoenix (Post 18094693)
oh its getting good

soon someone will try to prove the rational number system :)

Don't make me divide by 0!

TMM_John 04-28-2011 03:57 PM

Quote:

Originally Posted by Phoenix (Post 18094858)
its 2

trust me
you can prove it to yourself

It's 288. The bugs in the calculators that started the whole meme have been corrected. I'll let you troll in peace tho ;-)

Deputy Chief Command 04-28-2011 03:58 PM

http://www.physicsforums.com/showthread.php?t=488334

even the physics forums got trolled bad .. lol




Quote:

I get 288. In the acronym PEMDAS, the M and D operations are at the same priority and the A and S are at the same priority. Arithmetic operations at the same priority are evaluated left to right. So for example, 2 + 5 - 3 is the same as (2 + 5) - 3 = 7 - 3 = 4, while 2 - 5 + 3 is the same as (2 - 5) + 3 = -3 + 3 = 0.


I can't say that I remember my algebra teacher in ninth grade going into quite such detail (in fact, all I remember her telling us was the acronym MDAS, with a mnemonic device of My Dear Aunt Sally), but programming languages such as C, C++, C#, Fortran, Pascal, and others are very specific about operator precedence.

For this reason, 48÷2*(12) should be evaluated as if it were written (48÷2)*12 = 24 * 12 = 288.

If you really meant


it should be written as 48/(2(9 + 3)). That forces the multiplication to be performed before the division.
that being said / quoted from the physics forum . . . I voted "2" :1orglaugh:1orglaugh

uno 04-28-2011 04:03 PM

Quote:

Originally Posted by Phoenix (Post 18094802)
BTW the answer is 2

not 288
you must distribute the 2 into the bracket before returning to the rest of the expression

this is a troll thread though.

if you got this wrong, you are not a stupid person, it is written in a way that could be interpreted the wrong way.

if you need to see a proof i have it :)

duh
5678

uno 04-28-2011 04:03 PM

Quote:

Originally Posted by Phoenix (Post 18094815)
its ok..you are an awesome golfer

its enough :)

I suck at golf and I got it right. :upsidedow

Titan 04-28-2011 04:04 PM

http://www.google.com/search?q=48%C3%B72%289%2B3%29

case closed

288

You add 9 plus 3 then multiply/divide from left to right as per normal.

Nicky 04-28-2011 04:04 PM

I still think I'm right with my 288 answer.

WarChild 04-28-2011 04:05 PM

Quote:

Originally Posted by Phoenix (Post 18094858)
its 2

trust me
you can prove it to yourself

The question is written amigously, period. There's no PROOF you can offer to change that.

The standard would be to always use parentheses where a statement is ambiguous without special rules.

If you were looking for the answer 2, shouldn't the question really be written as

48/[2(9+3)] = ?

OR

48
------- = ?
2(9+3)

So yes, it's a pretty clever troll to write an ambigious statement and then argue about the results. However, it will never be a wrong answer to apply the standard order of operations to this equation.

jimmy-3-way 04-28-2011 04:05 PM

Quote:

Originally Posted by kristin (Post 18094820)
Because you have to foil ... so anything with N(X+Y) goes first. So you get NX+NY.

That's the distributive property, Ginger. Not FOIL.

Deputy Chief Command 04-28-2011 04:07 PM

Quote:

Originally Posted by Titan (Post 18094877)
http://www.google.com/search?q=48%C3%B72%289%2B3%29

case closed

288

You add 9 plus 3 then multiply/divide from left to right as per normal.

if people are really interested in this crap you should check out the physicsforum post on this

I like this one

Quote:

The general consensus among math people is that "multiplication by juxtaposition" (that is, multiplying by just putting things next to each other, rather than using the "×" sign) indicates that the juxtaposed values must be multiplied together before processing other operations.But not all software is programmed this way, and sometimes teachers view things differently. If in doubt, ask! - http://www.purplemath.com/modules/orderops2.htm

this indicates the correct answer is 2 not 288

http://www.physicsforums.com/showthr...=488334&page=6

kristin 04-28-2011 04:08 PM

Quote:

Originally Posted by jimmy-3-way (Post 18094882)
That's the distributive property, Ginger. Not FOIL.

Whatever, I wasn't 100% sure since FOIL is (X+Y)(T+Z).

newB 04-28-2011 04:12 PM

Quote:

Originally Posted by WarChild (Post 18094794)
What is making you do the multiplciation BEFORE division even though it comes afterwards when reading left to right?

Because that's the way you do it, otherwise the equation would be written:
(48÷2)(9+3)=X

If we substitute the X for 2 and 48 for Y so the equation would read:
Y÷2(9+3)=2
Y÷24=2
Y=48

If X were 288 then:
Y÷2(9+3)=288
Y÷24=288
Y=6912 which we already know is incorrect.

kaori 04-28-2011 04:13 PM

Quote:

Originally Posted by Joxxy (Post 18094703)
48÷2(9+3) = x ---> x/5.76 = 50

FOIL works for binomials, PEMDAS for equations. Work it left to right.
Trust me, I'm Asian.

I learned it as 'bedmas'
order of operations =
brackets
exponents
division&multiplication
addition and subtraction


answer = 2

Deputy Chief Command 04-28-2011 04:13 PM

http://www.zazzle.com/48_2_9_3_tshir...82834792365529


haha buy the t-shirt ... the answer is 288 I would say

marlboroack 04-28-2011 04:13 PM

I was going to say 36. Guess i should have finished school.

Meloman 04-28-2011 04:15 PM

Quote:

Originally Posted by FlexxAeon (Post 18094760)
google calc says 288

and we all know google is never wrong

:upsidedow

I got 288 the first time I tried, then checked google calculator and it says 288 too.

So I'm going with 288.

Deputy Chief Command 04-28-2011 04:19 PM

but of course in all reality a math professor has stated that there is no right or wrong

quoted from physics forum

Quote:

I think the best answer to this question was actually given by my professor. Some students asked this yesterday after class and he immediately answered that it was ambiguous. Which by looking at this discussion, I think is fair to say it is the case. Funny how it made it all over the interwebs though.
so the correct answer is AMBIGUOUS :1orglaugh

WarChild 04-28-2011 04:27 PM

Quote:

Originally Posted by newB (Post 18094902)
Because that's the way you do it, otherwise the equation would be written:
(48÷2)(9+3)=X

If we substitute the X for 2 and 48 for Y so the equation would read:
Y÷2(9+3)=2
Y÷24=2
Y=48

If X were 288 then:
Y÷2(9+3)=288
Y÷24=288
Y=6912 which we already know is incorrect.

Again, it's an argument of explicit versus implicit multiplication. Something that's not a steadfast rule. The point of the troll is that the original equation is written amigiously.

To write it properly to be solved as 288 it should indeed be written as:

(48÷2)(9+3)=X

By the same token to be solved as 2 it should be written as:

48/(2(9+3))

OR

48
-------
2(9+3)

Were it written in this fashion we could easily agree on the answer. It's not though, so there's no way that applying the standard order of operations to this can be considered "wrong".

VIXEN ESCORTS 04-28-2011 04:29 PM

It's 288, no sign defaults to multiply 24 x 12 = 288
You do the brackets first = 12
Then outside brackets is 24
There is nothing in between so default is multiply 24 x 12 = 288
Doing rational numbers and getting 24/12 = 2 is cool but it's wrong, that's not what the equation is saying.

datatank 04-28-2011 04:29 PM

YOu are all some smart fuckers.
I used to be good at math too .

Phoenix 04-28-2011 04:29 PM

Quote:

Originally Posted by WarChild (Post 18094939)
Again, it's an argument of explicit versus implicit multiplication. Something that's not a steadfast rule. The point of the troll is that the original equation is written amigiously.

To write it properly to be solved as 288 it should indeed be written as:

(48÷2)(9+3)=X

By the same token to be solved as 2 it should be written as:

48/(2(9+3))

OR

48
-------
2(9+3)

Were it written in this fashion we could easily agree on the answer. It's not though, so there's no way that applying the standard order of operations to this can be considered "wrong".


Tonight when you are lying awake, and this is bugging you
remember me and use my tube style embeds;)

jimmy-3-way 04-28-2011 04:33 PM

Quote:

Originally Posted by Phoenix (Post 18094948)
Tonight when you are lying awake, and this is bugging you
remember me and use my tube style embeds;)

Why would a sloppily written equation bug anyone?

The point of math is precision which is why you almost never see the ÷ symbol used in physics or engineering.

VIXEN ESCORTS 04-28-2011 04:36 PM

SHIT, oh my God are you Gordon Brown ? Is the reason the UK economy is gonna take the next 10 years to come right is because you thought that every time you spent £2 Billion it was really £288 Billion.

jimmy-3-way 04-28-2011 04:37 PM

Quote:

Originally Posted by Jesus H Christ (Post 18094952)
Occam's razor= 2

You can't use philosophy to solve math problems.

Otherwise I'd use Nietzsche's theory and point out that I don't even care what the answer is.

punker barbie 04-28-2011 04:38 PM

LOL saw this on another board recently ;)

Phoenix 04-28-2011 04:39 PM

Quote:

Originally Posted by punker barbie (Post 18094971)
LOL saw this on another board recently ;)

shhhhhh

wn

redwhiteandblue 04-28-2011 04:46 PM

Quote:

Originally Posted by WarChild (Post 18094664)
How does the original equation vary from what he posted? They're the same, aren't they? He added in the parenthesis to help demonstrate the order of operations.

No. Putting the 2 inside brackets with the 48 changes the order you do the equation in.

punker barbie 04-28-2011 04:47 PM

Quote:

Originally Posted by Phoenix (Post 18094975)
shhhhhh

wn

WN4L :pimp:pimp:pimp

uno 04-28-2011 05:05 PM

Quote:

Originally Posted by jimmy-3-way (Post 18094967)
You can't use philosophy to solve math problems.

Otherwise I'd use Nietzsche's theory and point out that I don't even care what the answer is.

Don't be an ubermensch.

BVF 04-28-2011 05:14 PM

written exactly like the title says, my natural display scientific calculator says the answer is 72

Si 04-28-2011 05:30 PM

The correct answer is:

Trying to do an equation that is written incorrectly makes you an idiot.

Si 04-28-2011 05:39 PM

Quote:

Originally Posted by WarChild (Post 18094939)
Again, it's an argument of explicit versus implicit multiplication. Something that's not a steadfast rule. The point of the troll is that the original equation is written amigiously.

To write it properly to be solved as 288 it should indeed be written as:

(48÷2)(9+3)=X

By the same token to be solved as 2 it should be written as:

48/(2(9+3))

OR

48
-------
2(9+3)

Were it written in this fashion we could easily agree on the answer. It's not though, so there's no way that applying the standard order of operations to this can be considered "wrong".

Or even better

48 / (2 X (9+3)) = 2 (48/24)

(48 / 2) X (9+3) = 288 (24X12)

EDIT: Just noticed you done one of them excactly the same as me. Oh well that just confirms it :)


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