What Is The Answer To This Math Problem?

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What is the answer to this math problem?
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 Bismarck.Raistlinratt
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By Bismarck.Raistlinratt 2011-04-12 08:07:58
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Trolls...

 Bismarck.Nalien
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By Bismarck.Nalien 2011-04-12 08:11:23
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Quetzalcoatl.Kanjirou said:
That's not math. This is math.
Technically a formula or equation of any sort, is no Maths either.
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By kcunningham 2011-04-12 08:12:58
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48/2(9+3) is the same as 48/2 * 1/12= 48/24=2 the error occurring with the calculators is that they are assuming that the (9+3) is not a denominator. So even if you did 48/2 from the start, you would have 24/(9+3). It would not become 24(9+3). Being that the parenthesis are on the right of the /, it makes it a denominator. Thus the answer is 2.
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By kcunningham 2011-04-12 08:13:39
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ryan seacrest?
 Cerberus.Kalyna
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By Cerberus.Kalyna 2011-04-12 08:34:26
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Pandemonium.Andypoole said:
All I want to know is the answer to this problem:

48÷2(9+3)
48÷2*9+2*3
48÷18+6
2 2/3 + 6

the answer is 8 2/3, or 8.66 repeating of course
 Phoenix.Degs
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By Phoenix.Degs 2011-04-12 08:36:50
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i still cant believe this thread continues... and is peaceful
[+]
 Gilgamesh.Tweeek
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By Gilgamesh.Tweeek 2011-04-12 15:03:50
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This subject is intriguing, I do agree that under the normal rules of order of operations (PEMDAS/BIDMAS) the answer is 288 but as I dug deeper I found this to be quite interesting. The entire case for the answer technically being 2 is based on the fact that the 2(9+3) does not have a (X or *) could fall under this this rule: multiplication indicated by juxtaposition

Which I do not know if it is technically a math law or if it should be.. Obviously as others have said the equation is written in poor notation like Shultz mentioned


This was the most official information I came across first about juxtaposition.


Source
Quote:

Alas, my search for an "authority" on this matter has been nearly
fruitless. The closest thing I have found is the convention used by
the _Mathematical Reviews_ of the American Mathematical Society (AMS),
at

Mathematical Reviews Database - Guide for Reviewers
http://www.ams.org/authors/guide-reviewers.html

that "multiplication indicated by juxtaposition is carried out before
division." Thus, in general, for any variables a, b and c, we would
have a/bc = a/(bc) (assuming, of course, that b and c are nonzero).
Indeed, this convention is consistent with what I have seen in many
mathematical books at various levels;


Also there seems to be a toss up between whether or not some Mathematicians would argue that implied multiplication takes priority over explicit multiplication, some graphing calculators have taken this in mind to allow a user to enter in a formula how it was written.

TI for example
 Leviathan.Dethard
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By Leviathan.Dethard 2011-04-12 16:12:10
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48/2(9+3) is not the same as 48/2*(9+3)

as in the first equation the brackets are representing the multiplication the multiplication should be carried out while dealing with what's in the brackets

In the second equation the multiplication is not represented by the brackets and so it is handled differently

So although I can see both sides of the argument I think 2 is the correct answer
 Gilgamesh.Tweeek
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By Gilgamesh.Tweeek 2011-04-12 16:36:04
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Leviathan.Dethard said:
48/2(9+3) is not the same as 48/2*(9+3)

as in the first equation the brackets are representing the multiplication the multiplication should be carried out while dealing with what's in the brackets

In the second equation the multiplication is not represented by the brackets and so it is handled differently

So although I can see both sides of the argument I think 2 is the correct answer

I agree and I disagree, I can honestly see both sides of the argument I think it's an amazing exploit to a possible flaw in the traditional PEMDAS/BIDMAS laws of order of operation and I think they should implement a new rule which would give priority to implied multiplication.



It's really makes you think.. What about languages that read RIGHT to LEFT? In English we read from left to right, so it would make sense that PEMDAS follows the same type of rules, how would this poorly written equation translate to other languages? There should in fact be some type of law regarding this. the a/bc, many people would mean a/(bc) but would not write it this way. It would look odd to think (a/b)c = a/bc even though under the laws of PEMDAS it is. It's just one perfect example and I'm sure there are countless other mathematical papers written with this implied rule but where and who can make it an actual law?

Most people agree it's a poor notation for an equation but that does not mean it could not exist. Yes, it would be better written 48 / (2(9+3)) or (48 / 2)(9+3) and again not many people even write using / or ÷ outside basic arithmetic, once we learn algebra we write equations such as:



or

 Sylph.Tigerwoods
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By Sylph.Tigerwoods 2011-04-12 16:39:26
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This is why you convert to all multiplication or all division and there won't be a problem.

divded by 2 = x .5
 Seraph.Gilhaven
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By Seraph.Gilhaven 2011-04-12 16:41:46
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I guess BODMAS/BOMDAS is canadian thing cuz ive never heard of it called PEMDAS before.

http://www.mathsisfun.com/operation-order-bodmas.html

And if you follow that the answer is and can only be 288.

No wonder ppl say the school system is failing.
 Sylph.Tigerwoods
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By Sylph.Tigerwoods 2011-04-12 16:46:19
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Seraph.Gilhaven said:


And if you follow that the answer is and can only be 288.

If (9+3) is in the numerator, that is true. The way this question is asked leaves ambiguity as to whether it is in the numerator or denominator. If it's in the denom, then the answer is not 288, even following that.
 Gilgamesh.Tweeek
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By Gilgamesh.Tweeek 2011-04-12 16:48:09
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Seraph.Gilhaven said:
I will completely disregard the posts in this thread that have anything to do with the current discussion.

k.
 Seraph.Gilhaven
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By Seraph.Gilhaven 2011-04-12 16:48:13
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Sylph.Tigerwoods said:
Seraph.Gilhaven said:


And if you follow that the answer is and can only be 288.

If (9+3) is in the numerator, that is true. The way this question is asked leaves ambiguity as to whether it is in the numerator or denominator. If it's in the denom, then the answer is not 288, even following that.

True but this is how it was written...if the OP wanted to put it as the num/den then he would have done so....unless he failed.
 Seraph.Gilhaven
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By Seraph.Gilhaven 2011-04-12 16:49:23
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Gilgamesh.Tweeek said:
Seraph.Gilhaven said:
I will completely disregard the posts in this thread that have anything to do with the current discussion.

k.


Odd...I never said that....anywhere lol
 Valefor.Slipispsycho
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By Valefor.Slipispsycho 2011-04-12 16:49:37
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Seraph.Gilhaven said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:


And if you follow that the answer is and can only be 288.

If (9+3) is in the numerator, that is true. The way this question is asked leaves ambiguity as to whether it is in the numerator or denominator. If it's in the denom, then the answer is not 288, even following that.

True but this is how it was written...if the OP wanted to put it as the num/den then he would have done so....unless he failed.
You're assuming the way the question is written isn't intentionally left open in the way it is.
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By Sylph.Tigerwoods 2011-04-12 16:50:38
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Seraph.Gilhaven said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:


And if you follow that the answer is and can only be 288.

If (9+3) is in the numerator, that is true. The way this question is asked leaves ambiguity as to whether it is in the numerator or denominator. If it's in the denom, then the answer is not 288, even following that.

True but this is how it was written...if the OP wanted to put it as the num/den then he would have done so....unless he failed.
Written as is, the question could very well go either way, which is why its a flawed question to begin with. Neither option is 100% clear.
[+]
 Bismarck.Nevill
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By Bismarck.Nevill 2011-04-12 16:52:48
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Sylph.Tigerwoods said:
Seraph.Gilhaven said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:


And if you follow that the answer is and can only be 288.

If (9+3) is in the numerator, that is true. The way this question is asked leaves ambiguity as to whether it is in the numerator or denominator. If it's in the denom, then the answer is not 288, even following that.

True but this is how it was written...if the OP wanted to put it as the num/den then he would have done so....unless he failed.
Written as is, the question could very well go either way, which is why its a flawed question to begin with. Neither option is 100% clear.

Quite personally, in my line of work, I write my own equations to figure out what I need to know, so I could care less what the correct answer to this particular poorly written equation is.
 Gilgamesh.Tweeek
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By Gilgamesh.Tweeek 2011-04-12 16:54:39
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Bismarck.Nevill said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:


And if you follow that the answer is and can only be 288.

If (9+3) is in the numerator, that is true. The way this question is asked leaves ambiguity as to whether it is in the numerator or denominator. If it's in the denom, then the answer is not 288, even following that.

True but this is how it was written...if the OP wanted to put it as the num/den then he would have done so....unless he failed.
Written as is, the question could very well go either way, which is why its a flawed question to begin with. Neither option is 100% clear.

Quite personally, in my line of work, I write my own equations to figure out what I need to know, so I could care less what the correct answer to this particular poorly written equation is.

and you still posted here..




also:
 Seraph.Gilhaven
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By Seraph.Gilhaven 2011-04-12 16:54:44
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Valefor.Slipispsycho said:
Seraph.Gilhaven said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:


And if you follow that the answer is and can only be 288.

If (9+3) is in the numerator, that is true. The way this question is asked leaves ambiguity as to whether it is in the numerator or denominator. If it's in the denom, then the answer is not 288, even following that.

True but this is how it was written...if the OP wanted to put it as the num/den then he would have done so....unless he failed.
You're assuming the way the question is written isn't intentionally left open in the way it is.

As it is written its straight forward... 48 divided by 2 multiplied by 12. Left to right like reading a book(an English book)...this is grade 6 math. When in doubt K.I.S.S it... Keep It Simple Stupid.
 Gilgamesh.Tweeek
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By Gilgamesh.Tweeek 2011-04-12 16:55:31
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Seraph.Gilhaven said:
Valefor.Slipispsycho said:
Seraph.Gilhaven said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:


And if you follow that the answer is and can only be 288.

If (9+3) is in the numerator, that is true. The way this question is asked leaves ambiguity as to whether it is in the numerator or denominator. If it's in the denom, then the answer is not 288, even following that.

True but this is how it was written...if the OP wanted to put it as the num/den then he would have done so....unless he failed.
You're assuming the way the question is written isn't intentionally left open in the way it is.

As it is written its straight forward... 48 divided by 2 multiplied by 12. Left to right like reading a book(an English book)...this is grade 6 math. When in doubt K.I.S.S it... Keep It Simple Stupid.

What you wrote is not the EXACT same as the original question.
 Bismarck.Nevill
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By Bismarck.Nevill 2011-04-12 16:55:49
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Gilgamesh.Tweeek said:
Bismarck.Nevill said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:


And if you follow that the answer is and can only be 288.

If (9+3) is in the numerator, that is true. The way this question is asked leaves ambiguity as to whether it is in the numerator or denominator. If it's in the denom, then the answer is not 288, even following that.

True but this is how it was written...if the OP wanted to put it as the num/den then he would have done so....unless he failed.
Written as is, the question could very well go either way, which is why its a flawed question to begin with. Neither option is 100% clear.

Quite personally, in my line of work, I write my own equations to figure out what I need to know, so I could care less what the correct answer to this particular poorly written equation is.

and you still posted here..




also:

Shut up Tweek, noone really gives a *** what you think anyway.
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By Sylph.Tigerwoods 2011-04-12 16:56:26
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Straight forward that ÷ could mean the denominator for the entire problem. Still could go either way.
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By Valefor.Slipispsycho 2011-04-12 16:56:44
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Now now, play nice..
 Gilgamesh.Tweeek
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By Gilgamesh.Tweeek 2011-04-12 16:57:51
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Bismarck.Nevill said:
Gilgamesh.Tweeek said:
Bismarck.Nevill said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:


And if you follow that the answer is and can only be 288.

If (9+3) is in the numerator, that is true. The way this question is asked leaves ambiguity as to whether it is in the numerator or denominator. If it's in the denom, then the answer is not 288, even following that.

True but this is how it was written...if the OP wanted to put it as the num/den then he would have done so....unless he failed.
Written as is, the question could very well go either way, which is why its a flawed question to begin with. Neither option is 100% clear.

Quite personally, in my line of work, I write my own equations to figure out what I need to know, so I could care less what the correct answer to this particular poorly written equation is.

and you still posted here..




also:

Shut up Tweek, noone really gives a *** what you think anyway.

If only people cared about what I had to say as much as they care about what you have to say...

That's my goal this year.. for people to 'give a ***' about what I think as much as you think people give a *** about what you think.
 Leviathan.Dethard
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By Leviathan.Dethard 2011-04-12 16:58:06
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Even if you attempt to convert it all to multiplication and division you must first deal with the brackets

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

you still have a bracket to deal with before proceeding to multiplication and division, hence why I feel the multiplication implied by the brackets must be carried out first.

I may be wrong but I still believe the answer is 2
 Gilgamesh.Tweeek
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By Gilgamesh.Tweeek 2011-04-12 16:59:01
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Seraph.Gilhaven said:
Valefor.Slipispsycho said:
Seraph.Gilhaven said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:


And if you follow that the answer is and can only be 288.

If (9+3) is in the numerator, that is true. The way this question is asked leaves ambiguity as to whether it is in the numerator or denominator. If it's in the denom, then the answer is not 288, even following that.

True but this is how it was written...if the OP wanted to put it as the num/den then he would have done so....unless he failed.
You're assuming the way the question is written isn't intentionally left open in the way it is.

As it is written its straight forward... 48 divided by 2 multiplied by 12. Left to right like reading a book(an English book)...this is grade 6 math. When in doubt K.I.S.S it... Keep It Simple Stupid.

Also dude who's to say that the mathematical equation written the exact same would need to follow the rules of LEFT to RIGHT in a different language? i.e. a language that is not read left to right.. that's just 1 small part that makes this so interesting
 Bismarck.Nevill
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By Bismarck.Nevill 2011-04-12 16:59:25
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Gilgamesh.Tweeek said:
Bismarck.Nevill said:
Gilgamesh.Tweeek said:
Bismarck.Nevill said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:
Sylph.Tigerwoods said:
Seraph.Gilhaven said:


And if you follow that the answer is and can only be 288.

If (9+3) is in the numerator, that is true. The way this question is asked leaves ambiguity as to whether it is in the numerator or denominator. If it's in the denom, then the answer is not 288, even following that.

True but this is how it was written...if the OP wanted to put it as the num/den then he would have done so....unless he failed.
Written as is, the question could very well go either way, which is why its a flawed question to begin with. Neither option is 100% clear.

Quite personally, in my line of work, I write my own equations to figure out what I need to know, so I could care less what the correct answer to this particular poorly written equation is.

and you still posted here..




also:

Shut up Tweek, noone really gives a *** what you think anyway.

If only people cared about what I had to say as much as they care about what you have to say...

That's my goal this year.. for people to 'give a ***' about what I think as much as you think people give a *** about what you think.

I really don't care what people think of what I have to say here. I have noone do impress. You are the one trying to belittle someone on the internet to make yourself look smart.

So I say again, shut the *** up, noone cares.
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By Asura.Theringer 2011-04-12 17:00:20
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Why is this 7 pages long.. Surely after the first page the answer should've been: "Shut up" ? lol
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