View Poll Results: 48÷2(9+3) =

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  • 2

    40 56.34%
  • 288

    23 32.39%
  • 2 or 288

    1 1.41%
  • ambiguous/erroneous statement

    7 9.86%
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Thread: 48÷2(9+3) = ?

  1. #71
    CrAzY-LeGs69's Avatar
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    Quote Originally Posted by Achtung!Baby View Post
    I dont understand the english words for explaining maths. I did it all in Afrikaans. But at the end of the day the answer is very clear , its 2. The divide figure thing (deel syfer) seperates the numbers. So no matter what *som* is written, you do that first on each side before dealing with the dividing cypher. For instance 1(1+2) + 3(3-1) means 1(3) + 3(2) and that means 3 + 6 and equals 9. And 48/2(9+3) = 48/2(12) = 48/24 = 2. Whether its plus , multiply or dividing, its still the same.

    Oh wait I just saw the catch to the whole thing. That the brackets should be seen as a multiply sign. Well this is a stupid question anyway *walks away*
    I agree, the answer is 2.

  2. #72
    XeroS1x's Avatar
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    It's a straight forward sum. As Lycanthrope mentioned earlier, BODMAS. You always work out the numbers within the brackets first.



  3. #73
    Crzwaco's Avatar
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    Quote Originally Posted by CrAzY-LeGs69 View Post
    I agree, the answer is 2.
    What did you do with the brackets?
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  4. #74
    Overkill Specialist Tank's Avatar
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    48 divided by 2 times 9+3 = 288

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  5. #75
    Lycanthrope's Avatar
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    Quote Originally Posted by Crzwaco View Post
    What did you do with the brackets?
    They multiplied the 2 into the brackets instead of treating it as (48/2)*(9+3) or, better written:


    Basically, they're multiplying the 2 into the brackets to give them 24 and then dividing 48 by 24.

    Basically, to get 2, they're reading the equation as:


    or as: 48/(2(9+3))

    Which is incorrect.
    Last edited by Lycanthrope; 26-05-2011 at 09:40 PM. Reason: Fixed image links

  6. #76
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    Quote Originally Posted by Crzwaco View Post
    If the question was what is the meaning of life that would be correct.
    Ah! Contemplating the meaning of existence ... my favourite pasttime

  7. #77

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    Since it's ambiguous, it's not really a math question. More like a logic question for what answer would "machine x" give and since the "machine" isn't mentioned, you don't have a set of rules to follow.

    Thus it's an invalid question. But if I assume it's for a calculator then the answer is 288.

    A casio should give you the right answer, but if you use the windows calculator your gonna have to rewrite the formula to:

    48 / 2 * 12

    / and * would take priority from left to right. Brackets obviously first, but when it's used it can be removed and replaced with a *
    Last edited by hideinlight; 26-05-2011 at 08:55 PM.

  8. #78

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    You can actually see it's not a well formed formula by trying to enter it actually as is in the windows calculator.
    You'll get:
    48 / (9+3)
    instead of
    48÷2(9+3)

    and thus the wrong answer of 4

  9. #79
    McT's Avatar
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    So is there a definitive answer from some Maths guru who can lay this to rest soon?

  10. #80

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    using BODMAS:

    48 / 2 * (9+3) =
    (9+3) = 12
    2 * (12) = 24
    48 / 24 = 2

    2

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