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Old 04-29-2011, 08:50 PM   #11
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I got 9 also.
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Old 04-29-2011, 09:07 PM   #12
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...

Last edited by FenderBender; 04-30-2011 at 10:48 AM.
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Old 04-29-2011, 09:12 PM   #13
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The answer is 1. I live on excel and I guarantee it will read 1. Wish I had my laptop to prove it. Maybe tomorrow. If your coming up with 9 your not keying it in correctly.
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Old 04-29-2011, 09:29 PM   #14
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Quote:
Originally Posted by jimmyjams4110 View Post
What does this equal:

6/2(2+1)=?

Big debate happening in the office over this.
Without looking what other said....
6/2+3
(2+1)=3
3X3=9



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Old 04-29-2011, 09:30 PM   #15
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Quote:
Originally Posted by Tuna Man View Post
Without looking what other said....
6/2+3
(2+1)=3
3X3=9
http://www.google.com/#hl=en&sugexp=...2bf32b5c0e0691



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Old 04-29-2011, 09:40 PM   #16
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Like some one mentioned above, the standard order of operations for math problems is

terms inside parenthesis
exponents and roots
multiplication and division
addition and subtraction

so with that in mind...

6/2(2+1)=
6/2(3)=
3(3)=
9

So I would say 9 is the answer but I can see how some folks are getting 1. I don't teach math though...just science
9
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Old 04-29-2011, 09:42 PM   #17
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while xl is great at "formulas", xl formula's aren't based on science, they are based on what ms has created

the TI85 is a scientific calculator and I believe far more accurate. you can manipulate the formulas in xl to do what you want, my wife writes xl programs and is one of the xl guru's for her company, you can't manipulate the TI85 and it says 9.
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Old 04-29-2011, 10:16 PM   #18
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http://www.wolframalpha.com

This search engine will tell you the answer . It is undoubtedly 9
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Old 04-29-2011, 10:23 PM   #19
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Now I feel dumb. It's the "/" symbol that threw me off. I googled it. From some professor of mathematics...

Best Answer - Chosen by Asker

I am your college professor that you requested, with a doctorate in Mathematics. I will break this down as simply as possible and end this debate as approx. 10 students have already asked me this today.
The problem as it is written is 62(1+2) , the cannot be substituted with a fraction bar because they have different ranks on the order of operations. It is an illegal math move to do this. The bar ranks with parentheses, is interchangeable with *. therefore the problem must be solved as 62(1+2) NOT 6 (over) 2(1+2) we do the parentheses first, so 62(3), the parentheses are now no longer relevant, because the number inside is in it's simplest form. Every single number has implied parentheses around it.
62(3)


edit this is a copy and paste from google answers, i am not a professor!
(6) (2)(3)
62*3,
or even converting the division to multiplication by a reciprocal (a legal math move)
(6)(1 (over) 2)(3)
are all correct ways to write this problem and mean exactly the same thing. Using pemdas, where md and as are interchangeable, we work from left to right, so (3)(3) or
3*3= 9

Just because something is implied rather than written does not give it any special rank in the order of operations.

The problem in it's simplest form, with nothing implied would look like this:
(1+1+1+1+1+1 (over) 1) (1+1 (over) 1) * ((1(over) 1) + (1+1 (over) 1))
From here, nothing is implied, This again, works out to 9.

If the symbol '/' was used this whole debate would be ambiguous since that symbol can mean "to divide by" or it could mean a fraction bar.

HOWEVER, because the symbol is used, it can not be changed to mean a fraction bar because that would change the order of operations and thus the whole problem, you can't change a symbol to mean something because you want to, in doing so you are changing the problem.

Once and for all, the answer is 9.

Hopefully some of my students see this so I can stop answering this question.

End of debate... hopefully.
Source(s):

Doctorate, 9 years teaching experience.

EDIT this is something I copied and pasted form google I am not a professor!

Last edited by FenderBender; 04-30-2011 at 10:44 AM. Reason: to clear confusion
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Old 04-29-2011, 10:26 PM   #20
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1 Dist. property
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