48÷2(9+3)

Discussion in 'Random Thoughts' started by Exit9, Apr 9, 2011.

  1. Sitka

    Sitka viajera

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    When doing either M/D or A/S you do them left to right.

    It is 288.
     
  2. rollingalong

    rollingalong Banned

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    a bracket is a substitute for a multplication sign if no other sign is used
    48/2x12
    24x12
    288

    you cant change the order of basic math this isnt calculus ..its are you smarter than a fifth grader
     
  3. I'minmyunderwear

    I'minmyunderwear Newbie

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    288. if it was 2, it would be 48/[2(9+3)]
     
  4. lovelyxmalia

    lovelyxmalia Banana Hammock Lifetime Supporter

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    You guys are all so shmahhhht!
     
  5. Bonkai

    Bonkai Later guys

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    The answer is 288, i think the look of the equation might be confusing some of you....
    ...if it were written like this would it make more sense?

    48
    --- (9+3)
    2
     
  6. KevinH

    KevinH Just Floating Here

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    Yes that is the correct way to write it for a result of 2

    But for a result of 288 the correct way is

    (48/2)(9+3)

    But the way that it is written the MORE correct answer is 2.
     
  7. I'minmyunderwear

    I'minmyunderwear Newbie

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    (48/2)(9+3) is the more correct way to do 288, but the slightly ambiguous original equation is still 288. multiplication does not precede division, so when not otherwise specified it would have to go left to right.
     
  8. SpacemanSpiff

    SpacemanSpiff Visitor

    You guys remind me of old people who argue about shit that never matters in life.
     
  9. broony

    broony Banned

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  10. Sitka

    Sitka viajera

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    I actually taught 3 or 4 lessons on this during my last practicum.

    "It matters if you ever want to answer the skill-testing question and get free stuff"
     
  11. thedope

    thedope glad attention Lifetime Supporter

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    You are nostalgic.
     
  12. Deranged

    Deranged Senor Member

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    48/2(9+3)
    48/2(12)

    24(12) = 288

    48/24 = 2

    the problem was written ambiguously. at this point, the math-doer doesn't know whether to multiply 2 * 12 or divide 48 by 2. each of which would result in different answers since theyre both the same according to order of operations (i think...it's been a while). so i guess i'd say both 2 and 288 are right, depending on the whether you divide 48 by 2 or multiply 2 by 12 first, but really it's just a poorly written math problem. needs to be written either (48/2)(9+3) or 48/(2(9+3)) for there to be a definitive right answer here
     
  13. The Imaginary Being

    The Imaginary Being PAIN IN ASS Lifetime Supporter

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    ... how many hippies does it take to solve a maths sum?

    enough to not get that damn light bulb fixed.
     
  14. Deranged

    Deranged Senor Member

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    whats 2 x 5 / 9 * 9 * 5 / 10?

    probably a lot of answers to that due to its lack of parentheses. who came up with that retarded math problem?
     
  15. Deranged

    Deranged Senor Member

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    so i looked it up and apparently you go from left to right if all other things are equal in the order of operations. http://www.purplemath.com/modules/orderops.htm

    which means you divide 48 by 2 instead of multiplying it by 12, so the correct answer is undoubtedly 288.

    48 / 2(9+3) parenthesis first
    48 / 2(12) divide 48/2 since it's left of 2*12
    24(12) dun dun dun
    288
     
  16. ThePepsiSyndrome

    ThePepsiSyndrome Member

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    [​IMG]

    288 is what I got.
     
  17. RobynCB90

    RobynCB90 Member

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    48÷2x(9+3)
    48÷2x(12)
    24x(12)
    288

    -Brackets first. Then, because multiplication and division are considered in the same order, you go by what appears first in the equation (the division). It must be assumed that the original creator of the problem would put the equation in a proper order...
     
  18. Meliai

    Meliai Members

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    I still think all you 288 fuckers are wrong. A parenthesis is indeed a substitute for a multiplication sign, and the P in PEMDAS stands for...well, you know.

    so therefore you would first take care of the parenthesis and do the multiplication first, so multiply 2x9 and 2x3. then add the products. Then divide 48 by that answer.

    2.

    Unless PEMDAS has changed since I was in 5th grade, I don't see how that could be wrong.
     
  19. RobynCB90

    RobynCB90 Member

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    I learned it as BEDMAS: do what's inside the brackets first.

    Have I been wrong about the order of equations my whole life? :S
     
  20. KevinH

    KevinH Just Floating Here

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    No you are correct.

    That is why the answer is 2.
     
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