48÷2(9+3) =

[Juddog]

Multiplication does not have a higher priority than division, regardless if the sign is there or not.

^^ This. I find it hard to believe the bodybuilding forum started this whole thing months ago and it's still going on. There's threads that are over a 100 pages dealing with this issue.

 

[Matthiasa]

IF you "agree to disagree", then that implies you are using your own method of dealing with the problem which is non-standard. Thus, you are simply wrong. People get sloppy from writing things shorthand and thus are trying to interpret the equation in their own special way, which is deviating from standard fashion.

Just no... not going into this again but all evidence says otherwise...
(read not just looking at program code for one side or there other)
But seriously, we need to post the TI screen shots(and the reason for such) again since a program generated solution is apparently oh so valued here?

 

[Juddog]

The standard order of operations is multiplication and division, left to right, then addition and subtraction left to right. (Parentheses are of course done first, and other operations can be inserted into the order as needed, e.g., exponentiation before multiplication and division). So that would make it 48÷2(9+3) = 48÷2*12 = 24*12 = 288.

 

[busydude]

People who share my view have talked about the lack of multiplication sign makes it an implied multiplication, which makes it a higher priority.

Implied multiplication does not mean it has to be given higher priority, you are thinking implied parenthesis.

 

[Juddog]

Just no... not going into this again but all evidence says otherwise...
(read not just looking at program code for one side or there other)
Do we need to post the TI screen shots again since a program code generated solution is apparently oh so valued here?

The older TI models were flawed. Wolfram Alpha > TI-85.

 

[zinfamous]

this thread, and others like it, I am sure--stand as a sad record of the capabilities of humanity.


I honestly hope that when our Alien overlords arrive, they will be impressed enough with our mastery of Pythagoras, and somehow ignore this colossal failure. Otherwise, they would be convinced to slay us on site, or harvest us for natural resources.

 

[Matthiasa]

The TI-Nspire is there newest and does that unless in TI-84 plus mode... so not exactly what I would call just their older models.
/leaves topic because of <insert type> people here.

 

[Juddog]

http://forum.bodybuilding.com/showthread.php?t=133389973
http://www.physicsforums.com/showthread.php?t=488334
http://forum.grasscity.com/general/787504-48&#37;F72-9-3-=.html
http://www.basilmarket.com/forum/1981713/0/48293__288.html
http://niketalk.yuku.com/topic/294672/48-2-9-3?page=1

All the same arguments, re-hashed over and over. The true answer is here:
http://www.mymathforum.com/viewtopic.php?f=13&t=20187

Distributing the 2 first violates the order of operations, as this is a multiplication and it is to the right of 48/2, thus, division of 48 by 2 is performed first, then this is multiplied by (9 + 3) = 12.

 

[Juddog]

Essentially this thread, as well as the numerous other threads, boils down to people using standard math versus their own version of math. If you go standard, there is only one answer: 244. If you go non-standard, you get stuff like this:

 

[qliveur]

Essentially this thread, as well as the numerous other threads, boils down to people using standard math versus their own version of math. If you go standard, there is only one answer: 244.

lol

 

[Dr. Zaus]

OoO isn't as important as how we feel about the numbers. I now want to change my answer to ? As no math can be understood rationally outside of a context, which is absent from the problem.

 

[Juddog]

Also regarding the TI-units,
http://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetId=103110

Implied multiplication has a higher priority than explicit multiplication to allow users to enter expressions, in the same manner as they would be written. For example, the TI-80, TI-81, TI-82, and TI-85 evaluate 1/2X as 1/(2*X), while other products may evaluate the same expression as 1/2*X from left to right. Without this feature, it would be necessary to group 2X in parentheses, something that is typically not done when writing the expression on paper.

This order of precedence was changed for the TI-83 family, TI-84 Plus family, TI-89 family, TI-92 Plus, Voyage&#8482; 200 and the TI-Nspire&#8482; Handheld in TI-84 Plus Mode. Implied and explicit multiplication is given the same priority.

 

[airdata]

IF you "agree to disagree", then that implies you are using your own method of dealing with the problem which is non-standard.

Yeah... my biggest problem with higher level math was getting things wrong for either not showing work or arriving at the correct answer by doing the math my own way.

Why this is frowned upon, I have no idea.

A right answer is a right answer no matter how you arrive at the answer.

 

[dma0991]

I am puzzled how could this thing spread here as well. Definitely not the first time that I have seen it here and I know of a different forum that has this exact question and it went for hundreds of pages long. 48÷2(9+3) should be turned into a meme. :awe:

 

[Lithium381]

2. derp

 

[BrokenVisage]

I am puzzled how could this thing spread here as well. Definitely not the first time that I have seen it here and I know of a different forum that has this exact question and it went for hundreds of pages long. 48÷2(9+3) should be turned into a meme. :awe:

The Internet is way ahead of you

 

[RedRooster]

Implicit beats Explicit. Unless there's boobs involved.

 

[Locut0s]

The Internet is way ahead of you

Again somewhat ambiguous as written.

 

[olds]

I suck horribly at math but even I know it's 288.

 

[Locut0s]

I suck horribly at math but even I know it's 288.

What is your avatar. Looks like a banner ad or something.

 

[Sid59]

thanks for the laughs, i unleashed the problem in my office full of sales, mech engineers and accounting, it was fun listening to them.

 

[olds]

What is your avatar. Looks like a banner ad or something.

It's a banner ad.

 

[Locut0s]

It's a banner ad.

Any reason you chose that one?

 

[SKORPI0]

48÷2(9+3) = X ....... solve for X.

24(9+3) = X
24*9 + 24*3 = X
216+72= X
288 = X

Not sure how it's not clear enough......

 

[iCyborg]

I watched today the game show 1 against 100 aired in my home country (for the reasons below, I'm ashamed of naming it).
The first qualifying question was: what is 1/2 divided by 1/2. The choices were:
A) 1
B) 1/2
C) 1/4

I know that I'm no average person when it comes to math, but I was shocked that 38 out of 100 people answered incorrectly. Sure they had only 6s to answer, but this is like elementary school math, about 5th grade if that. And these aren't stupid people, most of them compete at multiple game shows in my country and know a lot of s*it, like way more people knew what plant Monet liked to paint ffs... 48/2(9+3) is like renormalizing the Standard Model for them.