Interesting maths question

Discussion in 'Off-Topic Lounge' started by super6ft7, Apr 28, 2011.

  1. vbxz47

    vbxz47 Well-Known Member

    May 28, 2009
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    Yeah lol I meant Arabs found zero and started calculus and that stuff.
     
  2. LBG

    LBG Señor Member

    Apr 19, 2009
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    nada ilegal
    31.560499, -111.904128
    Many people (including Albert Einstein) would disagree.
     
  3. pluto6

    pluto6 Well-Known Member

    Jun 21, 2009
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    You guys are STILL having trouble with this? Here this 12 y/o will explain it all to you. It is really quite simple stuff.

     
  4. wootbean

    wootbean Well-Known Member

    Feb 8, 2009
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    found zero and started calculus
     
  5. Random_Guy

    Random_Guy Well-Known Member

    Apr 6, 2009
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    Australia, mate!
    But the rule is that you have to solve the equation from left to right. Therefore, it is assumed that you have to complete division first before multiplication.
     
  6. Random_Guy

    Random_Guy Well-Known Member

    Apr 6, 2009
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    Australia, mate!
    That's like saying 4/1*2. Every logical person would solve this equation from left to right, thus getting the answer of 8. Just type it into your calculator and you'll see. :rolleyes:
     
  7. wootbean

    wootbean Well-Known Member

    Feb 8, 2009
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    exactly, how hard is this to understand. you have to be Stupid to not get it
     
  8. ShadowsFall

    ShadowsFall Well-Known Member

    May 15, 2009
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    TA 09'
    Dude, do I know you from facebook? A friend of mine posted the same exact question a few days ago
     
  9. Random_Guy

    Random_Guy Well-Known Member

    Apr 6, 2009
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    Australia, mate!
    Well, in BODMAS, order actually refers to exponentials.
     
  10. Random_Guy

    Random_Guy Well-Known Member

    Apr 6, 2009
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    Australia, mate!
    Wow... this question has been posted on Facebook with over 1.6 million votes.
    967,000 people voted for 9.
    723,000 people voted for 1.
     
  11. pluto6

    pluto6 Well-Known Member

    Jun 21, 2009
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    That is really scary. About 40% can not do simple math.
     
  12. Rofl Copter

    Rofl Copter Well-Known Member

    Feb 21, 2011
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    I did Bodmas in school, but the way I was taught is that when solving multiplication and division in the same sum, you'd just work left to right.

    Therefore, it's 9.
     
  13. Teknikal

    Teknikal Well-Known Member

    Oct 26, 2010
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    Just to be unique/annoying I'm going to say 5
     
  14. starjimstar

    starjimstar Well-Known Member

    Sep 28, 2008
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    Pi is exactly 3!
     
  15. Dazarath

    Dazarath Well-Known Member

    Mar 21, 2010
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    I would argue it's much higher than 40%. Imagine you were taking a true/false test in which you knew none of the answers whatsoever, so you randomly guess instead. You wouldn't get the wrong answer 100% of the time, you'd get ~50% correct. Likewise, if the poll (or whatever it is) only has the options 9 and 1, then a lot of those correct answers are people happening to guess correctly.
     
  16. wootbean

    wootbean Well-Known Member

    Feb 8, 2009
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    I think some of the people who answered 1 were just thrown off by the ÷. I haven't seen that symbol in years, it even made me think it was 6÷6 for a moment. However some people are truly convinced that it's 1..
     
  17. #77 LostLegend, Apr 30, 2011
    Last edited: Apr 30, 2011
    Brackets first. Times the 2. I got 1.

    EDIT: Ok, NVM, now you see why I dropped maths!
     
  18. The Game Reaper

    The Game Reaper Well-Known Member

    Dec 6, 2008
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    #78 The Game Reaper, Apr 30, 2011
    Last edited: Apr 30, 2011
    It isn't like reading, it's not as simple as "left to right" you tards
    It has to adhere to the rule, whether you call it PMDASLR or BOMDAS. Do the brackets first. Most of you are simply adding what's in the brackets, that's only half of it. To fully complete the brackets step you must also multiply it out. Then, and only then, can you divide through.

    6÷2(1+2)=x

    6÷2(3)=x

    6÷6=x

    1=x

    Another way of answering the question is this;

    6÷2(1+2)=x

    6÷2=x
    allattt3

    6=x x 2
    tat3

    6÷6=x

    1=x
     
  19. First one is what I did.
     
  20. pluto6

    pluto6 Well-Known Member

    Jun 21, 2009
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    You need to go back and read much of the thread. Unfortunately you are totally INCORRECT!

    multiplication and division hold the EXACT same hierarchy in math unless specifically delineated by brackets. The ONLY thing that is bracketed is the 1+2....

    Therefore you do the 1+2 and get 3

    Then you have the Equation - 6÷2(3) - which written out long hand would be 6÷2 x 3.... Since there are no brackets, and multiplication and division have the same hierarchy, the order that you do the operation is determined moving left to right...

    Therefore 6÷2 = 3
    3 x 3 = 9....

    There really is no other way to do it, and coming up with your own set of rules does not make it correct. The brackets surrounding the 1+2 ONLY affect the 1+2... they don't carry over to the multiplication...

    6÷(2(1=2)) = would be what would have to be written to solve the equation the way that you solved it. Unfortunately, that second all important set of brackets are missing......
     

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