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What is the answer to this math problem?
サーバ: Odin
Game: FFXI
Posts: 4013
By Odin.Godofgods 2011-04-11 10:34:12
Caitsith.Madmaxximist said: Solve inside parenthesis is ALWAYS first, then anything with an exponent. Mulitplication and division are next but go in order of which comes first in equation from left to right. After all that, addition and subtraction come first and in order of which comes first, just like with multiplication or division.
Not always. P and E are grouped together jsut as mult/div and add/subtract.
So theriaticly 3^4+(4*5)=? You would start with the exponent first since you come asross it first.
サーバ: Caitsith
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By Caitsith.Madmaxximist 2011-04-11 10:49:10
Not always the case though when it comes to something, for example, (4*5)^6, but in your problem you have separated the 3^4 from the (4*5) by an addition sign so you would treat it as if it were an addition problem and solve in order of left to right. If you were to say, 3^4(4*5) you would have to solve inside the parenthesis first then carry out exponent and then multiply
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 Leviathan.Apoptygma
サーバ: Leviathan
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By Leviathan.Apoptygma 2011-04-11 10:58:20
 Bismarck.Nalien
サーバ: Bismarck
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By Bismarck.Nalien 2011-04-11 11:24:12
Leviathan.Apoptygma said:
Time and Money;
and
implies
plus;
Time + Money =/= Time * Money
Pretty entertaining regardless.
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 Bahamut.Icelord
サーバ: Bahamut
Game: FFXI
Posts: 183
By Bahamut.Icelord 2011-04-11 11:28:19
48/2(9+3) The answer is 288.
However the equation is incorrect it is a missing a variable as stated here by *
48/2*(9+3) so I performed default coefficient action and came up with 288.
2. 48/2(12)
3. 24(12) this is where by default you treat 24 as a coefficient.
LOL on the ninja edit!
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Asura.Nalien
サーバ: Asura
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Posts: 71
By Asura.Nalien 2011-04-11 11:36:02
Why are people still bothering with that poorly written ***?
I thought everyone realized by page one that it makes no sense to argue about this, although 288 makes the most sense due to the lack of a (), whatever they are called in English:
How you manage a 35 is beyond me too.
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サーバ: Bahamut
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By Bahamut.Raenryong 2011-04-11 11:36:59
wat
I also got the answer 2, but I can see both sides. Entirely depends on how you interpret it... it's a flawed question.
In England, we are taught to use BIDMAS
Brackets
Indices
Division/Multiplication
Addition/Subtraction
just on a random note.
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Ifrit.Tulnig
サーバ: Ifrit
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By Ifrit.Tulnig 2011-04-11 11:46:22
48/2(9+3) = 48/2*12 = 24*12 = 288
Multiplication and Division are essentially the same process. However it is done from left to right.
PEDMAS is mis-leading and not correct per say.
Parenthesis, then Exponents, then Multiplication/Division from left to right, then Addition/Subtraction (order doesn't matter).
In the US, PEDMAS is commonly taught incorrectly by teachers.
サーバ: Sylph
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Posts: 15065
By Sylph.Tigerwoods 2011-04-11 11:48:24
Ifrit.Tulnig said: Alexander.Tidusblitz said: its two. people are doing the order wrong and getting 288 or w/e. PEMDAS. Parenthesis Exponents Multiplication Division Add Subtract. Parenthesis. (9+3) = (12) 48/2(12) Exponents. None Multiplication. 2(12) = 24 48/24 Division. 48/24 = 2. Answer is two, anyone that says otherwise is stupid.
This is basic high school stuff people. Tidusblitz's solution is correct. BTW I have a graduate degree in Mathematics >< Except for multiplication doesn't come before division. They're the same tier and it goes left to right.
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By Sylph.Tigerwoods 2011-04-11 11:49:16
The only bit of confusion in the problem is whether the (9+3) is in the numerator or if it is in the denominator
サーバ: Shiva
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By Shiva.Flionheart 2011-04-11 11:49:38
I love it when people come in acting like it's simple, then still get it wrong.
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サーバ: Shiva
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By Shiva.Flionheart 2011-04-11 11:50:43
Bahamut.Raenryong said: wat
I also got the answer 2, but I can see both sides. Entirely depends on how you interpret it... it's a flawed question.
In England, we are taught to use BIDMAS
Brackets
Indices
Division/Multiplication
Addition/Subtraction
just on a random note.
I was wondering why I didn't recognise PEDMAS
Bahamut.Jetackuu
サーバ: Bahamut
Game: FFXI
Posts: 9001
By Bahamut.Jetackuu 2011-04-11 11:51:10
Bahamut.Jetackuu said: I redid the problem when I got home and as written (with improper notation, therefore being an improper problem, but whatever) the answer would come out to be 288.
I was doing it in my head at work from my phone, forgive.
P.S. for shame for Casio and TI for not programming their calculators right (or at least consistent)
Was thinking about it again and due to the fact that typically one would do 2(9+3) as 2(12) first then 48/ans.
just because you add the 9 and the 3 doesn't make the parenthesis disappear right away.
Depends how you do it in the long run, poor notation is poor notation.
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サーバ: Bahamut
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By Bahamut.Raenryong 2011-04-11 11:54:17
Shiva.Flionheart said: Bahamut.Raenryong said: wat
I also got the answer 2, but I can see both sides. Entirely depends on how you interpret it... it's a flawed question.
In England, we are taught to use BIDMAS
Brackets
Indices
Division/Multiplication
Addition/Subtraction
just on a random note.
I was wondering why I didn't recognise PEDMAS
Ya, exactly the same thing but just a difference in teaching.
Quote: Except for multiplication doesn't come before division. They're the same tier and it goes left to right.
The only bit of confusion in the problem is whether the (9+3) is in the numerator or if it is in the denominator
This is true, since division and multiplication are reciprocal operations. x/y = x * 1/y etc.
 Valefor.Zentoo
サーバ: Valefor
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By Valefor.Zentoo 2011-04-11 11:59:35
288
http://en.wikipedia.org/wiki/Order_of_operations
Quote: ... since multiplication and division are of equal precedence, M and D are often interchanged, leading to such acronyms as BIMDAS, BODMAS, BOMDAS, BERDMAS, PERDMAS, PEMDAS, and BPODMAS.
These mnemonics may be misleading, especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction. Using any of the above rules in the order "addition first, subtraction afterward" would also give the wrong answer.
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サーバ: Bahamut
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By Bahamut.Raenryong 2011-04-11 12:01:33
At the risk of looking extremely dumb,
e^(i * pi) = -1 and the 1/(2^n) series there becomes increasingly insignificant with each new term. I don't think I've done enough math (or at least I haven't remembered enough...) to resolve the overall outcome, but aren't you going to get a negative answer?
Diabolos.Mesheef
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By Diabolos.Mesheef 2011-04-11 12:02:01
288
サーバ: Bahamut
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By Bahamut.Raenryong 2011-04-11 12:03:48
Bahamut.Icelord said: 48/2(9+3) The answer is 288.
However the equation is incorrect it is a missing a variable as stated here by *
48/2*(9+3) so I performed default coefficient action and came up with 288.
2. 48/2(12)
3. 24(12) this is where by default you treat 24 as a coefficient.
LOL on the ninja edit
Again unless I'm being dumb, 24(12) would equal 288... you don't just add. It is perfectly valid to write it like that as an intermediate step.
What is 2(5x)? It's not 2 + 5x...
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Bismarck.Nalien
サーバ: Bismarck
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By Bismarck.Nalien 2011-04-11 12:04:53
Caitsith.Shiroi said: I must admit the person who came up with that is a brillant troll to make so many people think it's 2 lol. Maybe you should admit that you have missed the point of the troll instead. (2 v 288)
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 Lakshmi.Tronsy
サーバ: Lakshmi
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Posts: 99
By Lakshmi.Tronsy 2011-04-11 12:08:49
Bahamut.Raenryong said: wat
I also got the answer 2, but I can see both sides. Entirely depends on how you interpret it... it's a flawed question.
In England, we are taught to use BIDMAS
Brackets
Indices
Division/Multiplication
Addition/Subtraction
just on a random note.
Yes we in Canada are taught similar to this BEDMAS being our acronym
Brackets
Exponents
Division
Multiplication
Addition
Subtraction
サーバ: Sylph
Game: FFXI
Posts: 15065
By Sylph.Tigerwoods 2011-04-11 12:09:31
Caitsith.Shiroi said: I must admit the person who came up with that is a brillant troll to make so many people think it's 2 lol. If (9+3) is in the denominator, it is 2.
If it's in the numerator, it's 288.
From how the question was asked, it can go either way.
48 (9 + 3)
__________
2
48
______
2 (9 + 3)
From 48/2(9+3), you can't say for a fact which of the two problems is actually being asked.
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Diabolos.Mesheef
サーバ: Diabolos
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Posts: 97
By Diabolos.Mesheef 2011-04-11 12:10:46
Siren.Clinpachi said: I can easily admit that i don't know much math for ***and its been my major hold back in college.
But honestly involving this entire conversation....
Go spend like 30$ at the store and buy a TI calculator... and just *** plug in the problem exactly as it shows on paper... and hit *** enter.
There is your answer... and best of all... you can KEEP the fancy calculator for the next amazingly pointless math problem you may encounter.
Staples... that was *** easy.
Just google the equation, I bet you can find the answer faster and cheaper than if you went to staples.
Bahamut.Icelord
サーバ: Bahamut
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Posts: 183
By Bahamut.Icelord 2011-04-11 12:12:33
It is widely accepted that a statement k(c) is equivalent to saying k*(c). Even the argument that it might mean (2*9 + 3*9) is invalid given that, if one correctly follows rules of precedence, we get 24*9 + 24*3 (48/2), which simplifies to 216 + 72, which is 288. If you want an utterly unambiguous rewrite it would be ((48/2)*9)+((48/2)*3). Unfortunately you do not understand ((48/2)*9)+((48/2)*3) young Jedi. The high-energy physics, quantum mechanics, high-precision integer, and floating-point arithmetic is from the dark side! YOU!!!!.... I am your father!
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Bismarck.Hsieh
サーバ: Bismarck
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Posts: 709
By Bismarck.Hsieh 2011-04-11 12:30:24
My head says 288.
Wolfram Alpha says the same:
http://www.wolframalpha.com/input/?i=48%2F2%283%2B9%29
48/2(9+3)
48/2*(9+3)
48/2*12
24*12
288
or
48/2*12
48*6 or (48*12)/2 or 48*12/2 (fractions)
288
Bahamut.Icelord
サーバ: Bahamut
Game: FFXI
Posts: 183
By Bahamut.Icelord 2011-04-11 12:43:45
Ifrit.Tulnig said: Alexander.Tidusblitz said: its two. people are doing the order wrong and getting 288 or w/e. PEMDAS. Parenthesis Exponents Multiplication Division Add Subtract. Parenthesis. (9+3) = (12) 48/2(12) Exponents. None Multiplication. 2(12) = 24 48/24 Division. 48/24 = 2. Answer is two, anyone that says otherwise is stupid.
This is basic high school stuff people. Tidusblitz's solution is correct. BTW I have a graduate degree in Mathematics ><
I disagree, I was taught to reduce the fraction here 48/2(12) before continuing on with the equation. That is a frequent case in where division preempts multiplication, but the rules are, Parentheses OR Exponents,REDUCE! Multiplication OR Division, Reduce! & Addition OR Subtraction REDUCE!. Something about elementary R.R.R. reducing came up in my mind somewhere lolz. RRR in math means reduce reduce reduce, a parody of reduce reuse recycle. Its basically turning a fraction into an integer which is what is needed pronto in this perplexing algebraic equation.
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Lakshmi.Helixx
サーバ: Lakshmi
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Posts: 27
By Lakshmi.Helixx 2011-04-11 12:43:54
my god. I saw that on /b, now I see it here. I've lost faith in mankind. There is no "left to right" in math.
Division by 2 = multiplication by 1/2
Sorry, but math > classroom rules
 Lakshmi.Seoha
サーバ: Lakshmi
Game: FFXI
Posts: 587
By Lakshmi.Seoha 2011-04-11 12:46:56
288 FFS!!!!
...there's no secret behind it, is there.
Also I skipped the 5 pages, sorry ;3
*edit*
oh ugh, it's 2.
My bad D:
All I want to know is the answer to this problem:
48÷2(9+3)
Let the rage commence.
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