What Is The Answer To This Simple Math Problem?

Discussion in 'Mayberry Lounge' started by das omen, Aug 16, 2015.

  1. das omen

    das omen Green Belt

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    Came across this equation when helping my little cousin a few months ago, figured Sherdog can take a crack at it.

    8
     
  2. Horse Style

    Horse Style Silver Belt

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    The answer is 4
     
  3. BJ@LW&WW

    [email protected]&WW Gold Belt

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    equivalent question:

    48/2(9+3) = ?

    https://math.berkeley.edu/~gbergman/misc/numbers/ord_ops.html

     
  4. odog

    odog A cat trapped in a dog's body

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    Umm.......4.
     
  5. Lost

    Lost Looking through Platinum Member

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    yup
     
  6. Cheese

    Cheese Banned Banned

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    1 is the answer
     
  7. korean blood

    korean blood Keep tracks that make an Arab thief clap Platinum Member

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  8. Oedad

    Oedad Green Belt

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    The question is a free point on a test it's ambiguous.
     
  9. europe1

    europe1 It´s a nice peninsula to Asia

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    8/4=2
    (1+1)=2

    2*(2)=4

    The parenthesis is supposed to be calculated first.

    EDIT: ohhh....
     
  10. SingerAuto

    SingerAuto Purple Belt

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    I got 4.


    You do brackets or parenthesis first, then multiply/divide.

    So, 8/4(1+1)
    8/4(2)
    8/4 is 2. 2(2) is 4.

    I assume the proper protocol when multiply/divide are given the same weight in solving an equation, you simply go in order. So, 8 divided by 4 times 2.
     
  11. Kalmah

    Kalmah Gold Belt

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    Easy, the answer is 4.

    8
     
  12. brothir

    brothir Purple Belt

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    Stuff like this is why we should always use fractions instead of division signs. It's a shame many digital character tables don't support that.
     
  13. Lost

    Lost Looking through Platinum Member

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  14. brothir

    brothir Purple Belt

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    The calculations are easy in and of themselves: the difficult part is figuring out which convention you use for these things. You can get 4 or 1 depending on which you use.

    Perhaps the most common convention (in the US) is to read from left to right and resolve according to which operator has the highest priority. Multiplication and division has priority 2, addition and subtraction priority 1.

    As such you can immediately resolve the division as it has the highest priority available. You then have:

    2*(1 + 1)

    You then multiply into the parenthesis and get:

    2 + 2 = 4

    Alternatively, you resolve the expression inside the parenthesis first and get the same result.

    However, there are other conventions. One we use at the university I attend is that division sign ( / ) is the fraction line, and everything to the right of this is part of the denominator.

    This reading would result in 1. In order to get 4, one would have to write it as (1 + 1)*8/4

    It's just a matter of what convention one uses.
     
  15. Sdeaf

    Sdeaf Blue Belt

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    Answer is 1. Y'all need to Please Excuse My Dear Aunt Sally this stuff.

    Parentheses, Multiply, then Divide.

    2 x 4 = 8.
    8 divided by 8 is one.
     
  16. Francis Rossi

    Francis Rossi Here's a song for ya

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    Yeah, 288 is the only answer. Do the brackets first, you get 48/2*12. That's 288. Unless it's explicitly written that way (with brackets or written in fraction form), you would never do 2*12 first. You've altered the equation that way.
     
  17. Krav McGraw

    Krav McGraw Double Yellow Card Double Yellow Card

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  18. LordDude**

    LordDude** White Belt

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    PEMDAS!!!

    i got 1
     
  19. Seano

    Seano Hands of bone

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    I also thought it was 1. All I really remember from basic math in school is to do the parentheses first.

    Pretty crazy how little I use math since school. My math skills are very rusty right now.
     
  20. Kraysla

    Kraysla Black Belt

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    I got one also.
     

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