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

TMM_John 04-28-2011 02:40 PM

It's not quite as effective without the images.

http://i.imgur.com/BcFh5.jpg

http://i56.tinypic.com/16h6ja8.png

http://i.imgur.com/WyXh9.jpg

WarChild 04-28-2011 02:41 PM

Quote:

Originally Posted by FlexxAeon (Post 18094669)
this is where i went wrong :P

I think a lot of people get confused on this.

The reason why multiplcation/division and addition/subtraction are grouped at the same level and of equal improtance is becaue they're essentialy the same operations.

5/1 = 1*5
2-1= 2+ -1

At least that's how I remember it being explained.

FlexxAeon 04-28-2011 02:42 PM

48 ÷2 x 12

gah i'm dumb

Phoenix 04-28-2011 02:42 PM

Quote:

Originally Posted by TMM_John (Post 18094675)
It's not quite as effective without the image it's from.

i didnt see an image where i got it from

wait maybe you mean this one
http://img339.imageshack.us/img339/9549/headasplode.jpg

Nicky 04-28-2011 02:42 PM

Wow this thread blew up :P I am pretty sure I did It right though. Or maybe I need to get back to school? :Oh crap

Tom_PM 04-28-2011 02:43 PM

Quote:

Originally Posted by d-null (Post 18094674)
2(9+3) is assumed to be (2*(9+3))

if it was written 2*(9+3) it would not be the same

:2 cents:

288 cents is what I needed.

FlexxAeon 04-28-2011 02:43 PM

Quote:

Originally Posted by WarChild (Post 18094676)
I think a lot of people get confused on this.

The reason why multiplcation/division and addition/subtraction are grouped at the same level and of equal improtance is becaue they're essentialy the same operations.

5/1 = 1*5
2-1= 2+ -1

At least that's how I remember it being explained.

i was just forgetting the rules and thought that 2(12) took precedence for some foolish reason

my old math teacher Mr. Ramsey would slap me

Phoenix 04-28-2011 02:44 PM

oh its getting good

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

WarChild 04-28-2011 02:44 PM

Quote:

Originally Posted by Nicky (Post 18094684)
Wow this thread blew up :P I am pretty sure I did It right though. Or maybe I need to get back to school? :Oh crap

I'm fairly sure you did it right too. I haven't been to a Math class in a good number of years though so who knows maybe we're both wrong.

woj 04-28-2011 02:46 PM

trick question!

Joxxy 04-28-2011 02:46 PM

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.

FlexxAeon 04-28-2011 02:46 PM

JFK gonna say "288" instead of "50?"

TMM_John 04-28-2011 02:49 PM

The correct answer by the way, is 288 :)

d-null 04-28-2011 02:49 PM

Quote:

Originally Posted by FlexxAeon (Post 18094689)
i was just forgetting the rules and thought that 2(12) took precedence for some foolish reason

my old math teacher Mr. Ramsey would slap me

it does, 2(12) = (2(12)) it does not necessarily = 2*(12) when other expressions are involved

Konkan 04-28-2011 02:49 PM

48/2*(9+3)=48/2*12=48/24=2

cooldude7 04-28-2011 02:50 PM

wtf i read that thing after 48 as + plus.,.,., fuck me.

what did i loose ? other than virginity :P

VladS 04-28-2011 02:52 PM

Quote:

Originally Posted by TMM_John (Post 18094709)
The correct answer by the way, is 288 :)

I told you so.

TheDoc 04-28-2011 02:52 PM

That's not a divide sign, it's an over sign so you multiple first.

ilnjscb 04-28-2011 02:54 PM

http://knowyourmeme.com/memes/48293

WarChild 04-28-2011 02:56 PM

Quote:

Originally Posted by TheDoc (Post 18094719)
That's not a divide sign, it's an over sign so you multiple first.

Umm, what?

The "over" line in a fraction MEANS divide, does it not?

Have a look at your keyboard, let me know where the division sign resides? ;)

TMM_John 04-28-2011 02:59 PM

Quote:

Originally Posted by WarChild (Post 18094731)
Umm, what?

The "over" line in a fraction MEANS divide, does it not?

Have a look at your keyboard, let me know where the division sign resides? ;)

LOL, in people's imaginations.

vano 04-28-2011 03:03 PM

the answer is 2, idiots

9+3 = 12
12 x 2 = 24
48 / 24 = 2

TheDoc 04-28-2011 03:04 PM

Quote:

Originally Posted by WarChild (Post 18094731)
Umm, what?

The "over" line in a fraction MEANS divide, does it not?

Have a look at your keyboard, let me know where the division sign resides? ;)

It's still divide but it's said over, so the order changes. Either way, I'm no math person I just remember running into this with code.

Seth Manson 04-28-2011 03:05 PM

When I voted 288 and viewed the results, I was the only person that had said 288. Two people said 2, and one person said robot chicken.

Then I just sat quietly to see if anyone else would say 288.

DatingGold 04-28-2011 03:07 PM

288 is what I come up with

DirtyDanza 04-28-2011 03:07 PM

288
easy try something hard next time...

FlexxAeon 04-28-2011 03:08 PM

Quote:

Originally Posted by vano (Post 18094749)
the answer is 2, idiots

9+3 = 12
12 x 2 = 24
48 / 24 = 2

google calc says 288

and we all know google is never wrong

:upsidedow

TheDoc 04-28-2011 03:14 PM

Quote:

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

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

I have no idea what that is... if you have that in Doc terms maybe I can help :)

vano 04-28-2011 03:15 PM

Quote:

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

and we all know google is never wrong

:upsidedow

it's a troll

http://knowyourmeme.com/memes/48293

Phoenix 04-28-2011 03:18 PM

Quote:

Originally Posted by TheDoc (Post 18094764)
I have no idea what that is... if you have that in Doc terms maybe I can help :)


well basically a rational number is any number that can be expressed as a fraction

i cant believe how many people got this wrong

newB 04-28-2011 03:25 PM

I hope you all are joking.

48÷2(9+3)=X
48÷2(12)=X
48÷24=X
2=X

Or

48÷2(9+3)=X
48=2X(9+3)
48=18X+6X
48=24X
2=X

Or

48÷2(9+3)=X
48÷(18+6)=X
48÷(24)=X
2=X

Or

48÷2(9+3)=X
48÷(9+3)=2X
48÷(12)=2X
4=2X
2=X

I think it's safe to say the answer is 2.

TheDoc 04-28-2011 03:25 PM

Quote:

Originally Posted by Phoenix (Post 18094773)
well basically a rational number is any number that can be expressed as a fraction

i cant believe how many people got this wrong

Oh yeahhhh...

Math kills me, I just don't use it enough, other than percentages and ratios, basic stuff.. I've replaced the ol'memory with tons useless web knowledge and forgot all the math :)

kristin 04-28-2011 03:27 PM

Quote:

Originally Posted by newB (Post 18094788)
I hope you all are joking.



Or

48÷2(9+3)=X
48÷(18+6)=X
48÷(24)=X
2=X


I think it's safe to say the answer is 2.

That's how I did it and deep down I still feel right, but apparently not so much. :/

WarChild 04-28-2011 03:28 PM

Quote:

Originally Posted by newB (Post 18094788)
I hope you all are joking.

48÷2(9+3)=X
48÷2(12)=X
48÷24=X
2=X

Or

48÷2(9+3)=X
48=2X(9+3)
48=18X+6X
48=24X
2=X

Or

48÷2(9+3)=X
48÷(18+6)=X
48÷(24)=X
2=X

Or

48÷2(9+3)=X
48÷(9+3)=2X
48÷(12)=2X
4=2X
2=X

I think it's safe to say the answer is 2.

What is making you do the multiplciation BEFORE division even though it comes afterwards when reading left to right?

Lilit 04-28-2011 03:30 PM

lol got 2 at the first glance and when I looked better got 288. The correct answer is 288. Tricky :)

Phoenix 04-28-2011 03:30 PM

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 :)

kristin 04-28-2011 03:32 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 :)

yes!!!!!!!!!!!!

Joxxy 04-28-2011 03:33 PM

Guess I lost my Asian "math" cred. Very dishonorable.
Mind=blown

Phoenix 04-28-2011 03:35 PM

Quote:

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

its ok..you are an awesome golfer

its enough :)

WarChild 04-28-2011 03:36 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 :)

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.


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