What is the correct answer?

27 February, 2012 in  | 16 Comments 1. Mike

9:33 pm

It’s 9.

2. wow...

9:37 pm

The answer is 9. It’s sad that we have to even use claculators to do this…

3. jon snow

9:37 pm

Nine.

4. this is simple algebra

10:04 pm

The 2(1+2) is counted as being entirely in parenthesis, so it actually is
6/2(1+2)
6/((2×1)+(2×2))
6/(2+4)
6/6
1
So the correct answer is 1.

• I am smarter than the original poster

4:52 am

The 2(1+2) is not counted in the parenthesis using the order of operations we first do anything INSIDE the parenthesis or in any grouping symbol ie. ( [ { } ] ) working from inside to outside
6/2(1+2) this leaves us with
6/2(3) then again using the order of operations we look for exponents as there are none we move onto Multiplication OR Division working from left to right as if reading english so…
3(3) then again with the order of operations we get to multiply so
9

5. Math Whiz

10:11 pm

Multiplication and division happen simulataneously according to the order of operations so you should start all the way to the left and do 6/2=3(3)=9.
But if you want to argue that multiplication should occur before division it would be 6/(2*3)=1… I would tend to agree with the silver calculator.

6. *sighs*

10:33 pm

…i really think that the thing to question is what the original problem is. Since some calculators have different formats than others, it really is just dependent on the format of the calculator and how you type it in. The black calculator treats everything to the right of the division sign in the entered problem as belonging in the denominator of the fraction 6/((2(1+2)) which does equal 1. The silver calculator treats the entered problem like this (6/2)(1+2) which equals 9. Either way, there isn’t really a sure way to know which is correct without knowing the original problem. The ambiguity resulting from the lack of parentheses is quite depressing. Additionally, you can notice that these are different models, they probably just have different defaults, but you must use more parentheses to get the answer you want!

7. Bob Nigga

10:47 pm

Use pemdas people..

• Jared..

7:38 am

…seriously bruh.

8. jshah

3:46 am

Yes answer is 9, not 1. In order to say that 2 times 3 happens before the division, you would have to put them in their own parenthesis.

9. Jared..

7:37 am

P.E.M.D.A.S. —please excuse my dead aunt sally
So…
6/2 *(1+2)….
6/2 *(3)
6/ 6
=1

• Jared..

7:38 am

And its dear*** not dead. sorry.

10. Natalie

10:03 am

BIDMAS says 9.

11. TashGut

11:21 am

Ah, I guess PEMDAS is the US way? In the UK (and after Wikipediaing, Canada and ‘other Eniglish-speaking countries’) we use BODMAS or PEDMAS – that would give 9. PEMDAS gives 1. So the black one was probably made in the US and the silver one elsewhere.

12. 11:28 am

I am dissapointed by the stupidity of people.
“The answer is 9. Itâ€™s sad that we have to even use claculators to do thisâ€¦”
It is not. The first step in that kind of a problem is to open the brackets. It would equate in 6 / [ ( 2 * 1 ) + ( 2 * 2 ) ] = 6 / ( 2 + 4 ) = 6 / 6 = 1

13. Marina

2:09 am

The first you have to do is the operation in brackets, so then you have 6/2*(3). After that, just follow the logical order, because multiplications and divisions are in the same step: First 6/2, and then multiply it by 3 —> 3*3=9. I’m sure the correct answer is 9.