48÷2(9+3)=??? 2 or 288 - Forum - Grand Prix Racing Online

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Grand Prix Racing Online Forum > Off topic forum > 48÷2(9+3)=??? 2 or 288

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Topik: 48÷2(9+3)=??? 2 or 288

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Reza Khadzli
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#901 dikirim Apr 22 2011, 18:32:48

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it just stupid math questions,why did we need to think about it?It is not in our SAT Exam

Greg Wingerter
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#902 dikirim Apr 22 2011, 18:42:03

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288? Following PEMDAS, I get 2:

48÷2*(9+3) = 48÷2*(12) = 48÷24 = 2

The reason why some people are getting 288 is that they're forgetting that there's an invisible multiply sign in the expression.

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#903 dikirim Apr 22 2011, 18:45:59

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hfjf'

Emre Demir
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#904 dikirim Apr 22 2011, 19:15:49

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Quote ( Greg Wingerter @ April 22nd 2011,18:42:03 )

The reason why some people are getting 288 is that they're forgetting that there's an invisible multiply sign in the expression.

the reason why some people are getting 2 is that they didn't take primary school lessons

Marvin Mackenberg
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#905 dikirim Apr 22 2011, 19:21:52

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From what I learned at primary school I would say 288, but from what I learned after that I would say 2

Emre Demir
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#906 dikirim Apr 22 2011, 19:26:50

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Quote ( Marvin Mackenberg @ April 22nd 2011,19:21:52 )

From what I learned at primary school I would say 288, but from what I learned after that I would say 2

2+2=4 I think this must be same at primary school and after. So as you see math is not flexible. This is why people should start from the beginning.

Nick Boyd
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#907 dikirim Apr 22 2011, 19:44:30

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http://www.google.com/search?q=48%C3%B72%289%2B3%29%3D&i...

the google says 288... trust the google

Emre Demir
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#908 dikirim Apr 22 2011, 19:48:12

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Quote ( Nick Boyd @ April 22nd 2011,19:44:30 )

trust the google

no need to trust to google but you can solve it just with your primary sc education.

Daniel Bassett
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#909 dikirim Apr 22 2011, 20:02:18

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Hey guys, stop arguing. I think I can prove this.

48/2(9+3)

First do the brackets

9+3=12

So that makes it.

48/2(12)

Now the 2(12) part usually means algebra. so if we make x=12

2x=24

48/2x=2

So it is 2.

I hope that you see the logic in this.

Emre Demir
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#910 dikirim Apr 22 2011, 20:31:39

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Quote ( Daniel Bassett @ April 22nd 2011,20:02:18 )

Hey guys, stop arguing. I think I can prove this.

48/2(9+3)

First do the brackets

9+3=12

So that makes it.

48/2(12)

Now the 2(12) part usually means algebra. so if we make x=12

2x=24

48/2x=2

So it is 2.

I hope that you see the logic in this.

Nope. its okay until this point First do the brackets

9+3=12
but after that you're wrong.
Because patition should be done before the multiplication.
which is makes 288

Daniel Bassett
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#911 dikirim Apr 22 2011, 20:34:25

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Quote ( Emre Demir @ April 22nd 2011,20:31:39 )

Nope. its okay until this point First do the brackets

9+3=12
but after that you're wrong.
Because patition should be done before the multiplication.
which is makes 288

but since its the 2(9+3)

What is (9+3) usually?

a letter in algebra instead of writing 12.

So it is 2(12) which makes it 48/24 so its 2.

Arald Sopoti
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#912 dikirim Apr 22 2011, 20:36:06 (terakhir disunting Apr 22 2011, 20:37:21 oleh Arald Sopoti)

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Quote ( Emre Demir @ April 22nd 2011,20:31:39 )

9+3=12
but after that you're wrong.
Because patition should be done before the multiplication.
which is makes 288

but it isn't only 12.it is (12) so we need to multiplicate first 2 with 12 and than 48/24=2

EDIT:oops sorry Daniel.in the same time i was writing you posted it

Hans Kranz
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#913 dikirim Apr 22 2011, 20:43:02

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48/2x is NOT 24/x BUT 24*x !!! How many times do we (the "288ers") have to repeat that ?!

Quote ( Ante Bucevic @ April 22nd 2011,09:14:26 )

I cant believe the results in the poll,
i would never guessed not even close, i expected more from gpro, but obviously this brings up the question of who is actually using this forum, plus how do the people play this game if they have no basic knowledge of math.

But it was fun to read some of the comments :)

Assumed that your result is 288 i fully agree.

Emre Demir
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#914 dikirim Apr 22 2011, 20:58:19

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Quote ( Arald Sopoti @ April 22nd 2011,20:36:06 )

but it isn't only 12.it is (12) so we need to multiplicate first 2 with 12 and than 48/24=2

you did (9+3) this because you have to brake brackets first. after that we 12. NOT (12) !! ( even we have according to your logic there nothing to do!! this why we don't need to use brackets )
After all we have 48/2*12 at this point patition have to be done before the multiplication.

Andi Mankolli
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#915 dikirim Apr 22 2011, 21:39:03

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unquestionably 288

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#916 dikirim Apr 22 2011, 21:46:18

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It's clearly 288, so we can stop the debate ;)

Emre Demir
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#917 dikirim Apr 22 2011, 22:00:40

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Quote ( Stephen Brewster @ April 22nd 2011,21:46:18 )

It's clearly 288, so we can stop the debate ;)

Yeap :D after my answer :D no doubt :d

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#918 dikirim Apr 23 2011, 00:14:39

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Is two, the 288ers don't know remove brackets

Daryl Gee
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#919 dikirim Apr 23 2011, 00:32:42

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OK. So the people who think 48÷2*(9+3) = 2, would you also think that 48÷2+(7+3) = 2? Because that would be by the same bracket removal logic you're using.

Marcelo Michelini
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Krew GPRO
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#920 dikirim Apr 23 2011, 00:40:33

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Quote ( Daryl Gee @ April 23rd 2011,00:32:42 )

OK. So the people who think 48÷2*(9+3) = 2, would you also think that 48÷2+(7+3) = 2? Because that would be by the same bracket removal logic you're using.

no, + and - separate terms, so there is no arguable thing there

James Austerberry
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#921 dikirim Apr 23 2011, 00:49:11

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http://img861.imageshack.us/i/mathzs.png/

Does writing it out properly help anyone? :)

David Craig
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#922 dikirim Apr 23 2011, 00:49:21

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this is hilarious, its 288.

48 ÷ 2 × 12 = 24 × 12 = 288 (correct)

48 ÷ 2 × 12 = 48 ÷ 24 = 2 (wrong)

tah dah

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#923 dikirim Apr 23 2011, 00:54:38

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I think you 288 guys are all missing the fact that there is no multiplication sign between the brackets at the 2. Maybe that helps :D

David Craig
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#924 dikirim Apr 23 2011, 00:56:03

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I believe it's taken as a multiplication sign. generic maths rule :P we just assume it

Daryl Gee
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#925 dikirim Apr 23 2011, 00:57:12 (terakhir disunting Apr 23 2011, 00:58:52 oleh Daryl Gee)

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Quote ( James Austerberry @ April 23rd 2011,00:49:11 )

Does writing it out properly help anyone? :)

It probably would. So why would you post a link to someone writing it out improperly?

Quote ( James Austerberry @ April 23rd 2011,00:54:38 )

I think you 288 guys are all missing the fact that there is no multiplication sign between the brackets at the 2.

So you DON'T multiply by the stuff in the brackets? What do you do with it, then?

David Craig
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#926 dikirim Apr 23 2011, 01:01:06 (terakhir disunting Apr 23 2011, 01:02:16 oleh David Craig)

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Quote ( Daryl Gee @ April 23rd 2011,00:57:12 )

So you DON'T multiply by the stuff in the brackets? What do you do with it, then?

ooohhhh so we leave it, the answer is option x: 24(12)

I see now.....

Luis Berenguer
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#927 dikirim Apr 23 2011, 01:09:12

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Quote ( David Craig @ April 23rd 2011,01:01:06 )

oohhhh so we leave it, the answer is option x: 24(12)

Quote ( David Craig @ April 23rd 2011,01:01:06 )

this is hilarious, its 288.

48 ÷ 2 × 12 = 24 × 12 = 288 (correct)

48 ÷ 2 × 12 = 48 ÷ 24 = 2 (wrong)

tah dah

Definitely, you don't know remove brackets. You must learn maths

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#928 dikirim Apr 23 2011, 01:12:23

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Quote ( Luis Berenguer @ April 23rd 2011,01:09:12 )

You must learn maths

Maybe you...

http://www.google.com/search?hl=&q=48%2F2*%289%2B3%29&am...

Is Google wrong or it must also learn maths?

James Austerberry
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#929 dikirim Apr 23 2011, 01:12:29

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Yep, the brackets want expanding first. Getting rid of the little multiply sign saves the effort of adding in an extra pair of brackets, like I'd assume you'd want to do if you wanted to make the answer to that equation equal 2?

I'm not sure how this has got 31 pages long though, as long as you know your on notations when working out formulas, there shouldnt be a problem, unless you're taking someone elses crazy test :D

Harri Pakosta
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#930 dikirim Apr 23 2011, 01:17:47 (terakhir disunting Apr 23 2011, 01:45:14 oleh Harri Pakosta)

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Hitler thought it was 288.

also http://www.purplemath.com/modules/orderops2.htm

the answer is 2. case closed as far as I am concearned. I thought it was 288 as well at first.

A simple example is a/bc

would you write it as:
a/bc=(a/b)*c or
a/bc=a/(bc)

option b is correct, but the real moral of the story is dont write a/bc and neither side is a "stupid uneducated troll". Because even math teachers would argue about this.

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