6


6รท2(1+2) = ?

  1. 9

    94 vote(s)
    54.3%
  2. 1

    77 vote(s)
    44.5%
  3. 7

    2 vote(s)
    1.2%

Last Updated:

  1. Vihzel

    Vihzel Destroying Balls Everyday VIP Member This Topic's Starter

    Joined:
    Apr 8, 2010
    Messages:
    5,364
    Likes Received:
    1,055
    Welcome to one of the easiest algebraic equations in the world!... or is it? MUAHAHAHAHA!

    Can you solve this pesky little problem while also giving damning evidence that the other 2 can not possibly work? :p

    YOU MUST CHOOSE ONE AND ONLY ONE!

    Calculations:

    6
     

    Advertisement
    alostpacket and Stinky Stinky like this.
  2. Bob Maxey

    Bob Maxey Well-Known Member

    Joined:
    Sep 24, 2010
    Messages:
    4,836
    Likes Received:
    806
    LOL . . . the debate continues.

    Actually, I once used a similar problem in HP ICT Training. In my case, it was this one: 1 + 2 x 3 = ?

    Some said 9, some said 7. Oddly, when I expressed it the following way, time to solve was longer: 1.0 + 2.00 x 3.000 = ___

    The answer to your question is 8.96. Also, make the responders prove their answer.

    Since I am a world champion thread hijacker, I'll ask the gathered group to give the next number in this series and explain their guess.

    1,1,1,2,1 _____

    Bob

    PEMDAS!

    Nuff Said

    If you are bored, try these math problems.

    Unsolved Problems -- from Wolfram MathWorld

    Bob
     
    jroc and Stinky Stinky like this.
  3. Usta

    Usta Well-Known Member

    Joined:
    Jul 8, 2010
    Messages:
    2,585
    Likes Received:
    1,372
    @Vihzel,
    Can I have a voting option: Both "9" and "1"? :)
     
  4. Abdur

    Abdur Well-Known Member

    Joined:
    Sep 30, 2010
    Messages:
    252
    Likes Received:
    34
    If you use the order of operations, Brackets comes before all :p Therefore 9 would be the correct answer ;)
    (Either 9 or 1 :p )
     
  5. Vihzel

    Vihzel Destroying Balls Everyday VIP Member This Topic's Starter

    Joined:
    Apr 8, 2010
    Messages:
    5,364
    Likes Received:
    1,055
    You have to make a decision simply based on the equation given in the title. Imagine as if you had that on a test. Better be careful. :)

    An equivalent problem was posted on a physics forum with two answers essentially at 50/50.
     
  6. Stinky Stinky

    Stinky Stinky Well-Known Member

    Joined:
    Aug 31, 2010
    Messages:
    4,113
    Likes Received:
    1,975
    Ahhh!

    I like a challenge!

    I LOVE Maths even though I suck at it so much! :)

    Hmm the brackets say that is a single unit but on the other hand the division sign shows the whole thing or the entire equation is divided by 6.

    So it looks like this:

    2(1 + 2)
    ________

    6

    So it is 1.

    So I think the answer is 1 if we use BODMAS. It should be that I think so at least.

    However BODMAS claims that Division comes before multiplication and then multiplication comes after Division in that order / sequence.

    But some Mathematicians say that neither Division and Mulitplication comes before the other but I am not too sure why lol.

    I think they are both equally important because both basically boil down to Add and Subtract.



    World champion thread hi-jacker LOL you make me laugh dude! :D

    If we use sequences and series I think the answer is 3

    I think this is an "Dual" infinite sequence :)

    That is there are two sequences in this number line.

    First Sequence is 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,

    NOW the second sequence is:

    1, 2, 3, 4, 5, etc etc

    But I could be totally wrong lol :)
     
  7. 330D

    330D From My Cold Dead Hands VIP Member

    Joined:
    Mar 4, 2010
    Messages:
    2,863
    Likes Received:
    779
    You must solve the problem within the brackets as per the order of operations, therefore it must be 9. Don't you guys remember 6th grade math?
     
  8. Usta

    Usta Well-Known Member

    Joined:
    Jul 8, 2010
    Messages:
    2,585
    Likes Received:
    1,372
    Brackets are clear enough. The more interesting part is this:

    6
    --- * 3 = 9
    2

    or

    6
    --- = 1
    2*3

    Depends how you look at it... :)
     
    Tumeg, jroc and Stinky Stinky like this.
  9. indybail

    indybail Well-Known Member

    Joined:
    Jan 27, 2011
    Messages:
    139
    Likes Received:
    13
    The parentheses dictate that the product within them should multiplied by the product external to them.
     
  10. lunatic59

    lunatic59 Moderati ergo sum Moderator

    Joined:
    Jun 12, 2010
    Messages:
    30,288
    Likes Received:
    22,264
    Ahh, wonderful trick question. I haven't seen this since my days as a janitor for the CIA ... ladies rooms only (hey, government jobs have their perks.)

    It a basic binary cipher where integers represent 1's and symbols 0's so:

    6
     
    alostpacket likes this.
  11. nyydynasty

    nyydynasty Well-Known Member

    Joined:
    Sep 13, 2010
    Messages:
    956
    Likes Received:
    171
    google says so ... i'm voting "9"
    Google
     
  12. Roze

    Roze Hiding behind a mystery VIP Member

    Joined:
    Jan 20, 2010
    Messages:
    9,813
    Likes Received:
    2,183
    I go with 9 because of BODMAS

     
  13. shawn1224

    shawn1224 Ex CEO-DNPSEA foundation VIP Member

    Joined:
    Dec 10, 2009
    Messages:
    2,186
    Likes Received:
    292
    Wolfram Alpha says 9 so I'm going with that.


    I'm guessing the answer is 3

    The sequence is

    1,1

    1,2

    1,3

    1,4

    1,5

    and so on ...
     
  14. krouget

    krouget Well-Known Member

    Joined:
    Jan 13, 2010
    Messages:
    456
    Likes Received:
    121
    The problem is more clearly written like this: (6/2) * (1+2), in which the answer is 9.

    We were always taught to write using parenthesis/brackets when in question, so as to be clear about our intention, and to circumvent confusion.

    In order for it to be 1, people would have to add their own set of parenthesis/brackets, which wouldn't follow the problem, as written. It's not written as: 6/[2*(1+2)], for example.
     
  15. dan330

    dan330 Well-Known Member

    Joined:
    Jan 22, 2010
    Messages:
    11,465
    Likes Received:
    3,110
    my answer is 1.
    following BODMAS
    and the assumption of (), when next to a #, there is an assumption fo () around them.

    so the equation should read:
    (6) / (2(1+2)) =
    6 / (2(3)) =
    6 / 6 =
    1 = x
     
    PrinceCorwin likes this.
  16. jroc

    jroc Well-Known Member

    Joined:
    Apr 10, 2010
    Messages:
    2,614
    Likes Received:
    358
    its 1

    In school many years ago they taught us PEMDAS or Please Excuse My Dear Aunt Sally if that helped ppl remember it easier. They still do this today, my kids school anyway.

    Parenthese
    Exponents
    Multiplication
    Division
    Addition
    Subtraction

    Ahhh I was in so big of a rush I see Bob Maxey aleady bought up PEMDAS. It pays to read threads from the beginning to end and not skip...lol

    I see one thing...there are some different schools of thought in here...lol I'm sticking with 1.

    Now I'm curious: I see BODMAS could be interpreted division first than multiplication. How can one use both PEMDAS and BODMAS and get the same answer?

    And doing some reading I guess I should say they taught us PEMDAS in the U.S.
     
    PrinceCorwin likes this.
  17. gallandof

    gallandof Well-Known Member

    Joined:
    Jul 8, 2010
    Messages:
    1,927
    Likes Received:
    296
    theres two right answers, if I remember PEMDAS was actually


    P
    E
    M+D
    A+S

    and it shouldnt matter what order you use. except with this problem CURSE YOU!
     
  18. gallandof

    gallandof Well-Known Member

    Joined:
    Jul 8, 2010
    Messages:
    1,927
    Likes Received:
    296


    as for your problem bobby boy (just felt like it ) im going to guess the answer is 3 although with my answer im inputting my own order

    1(multiply->),1(divide->),1(subtract->),2(add->),1 _____
     
  19. ParishL31

    ParishL31 Well-Known Member

    Joined:
    Oct 15, 2010
    Messages:
    409
    Likes Received:
    105
    I say 9 as well. With PEMDAS, it's what's inside the parenthesis. As others have said, when the one number is in the parenthesis and the other is outside, it can simply be rewritten with a multiplication symbole.

    2(3) = 2 * 3, and once you rewrite it that way, PEMDAS takes over and you divide 6/2 first then multiply by 3.

    Also just punched it into my TI-83 and got 9. I trust that thing with my life...well at least when it comes to math.
     
  20. apavolka

    apavolka Well-Known Member

    Joined:
    May 15, 2010
    Messages:
    495
    Likes Received:
    30
    Order of operations (PEMDAS) states that multiplication and division is done left to right in the same step... as is addition and subtraction.. answer is 9.

    http://www.purplemath.com/modules/orderops.htm
    Second paragraph about ranks
     
  21. apavolka

    apavolka Well-Known Member

    Joined:
    May 15, 2010
    Messages:
    495
    Likes Received:
    30
    Also hate to burst your bubble but unless you dictate the order of operations into the equation when it is entered into a ti-83/84, the calculator will NOT follow order of operations.

    However you are still correct.
     
  22. MyNamesTooLong

    MyNamesTooLong Well-Known Member

    Joined:
    Jan 17, 2011
    Messages:
    826
    Likes Received:
    51
    it's 1...order of operations.
     
  23. dan330

    dan330 Well-Known Member

    Joined:
    Jan 22, 2010
    Messages:
    11,465
    Likes Received:
    3,110
    so.. does the OP even have the right answer?????
     
    jroc likes this.
  24. jroc

    jroc Well-Known Member

    Joined:
    Apr 10, 2010
    Messages:
    2,614
    Likes Received:
    358
    ^lol!!

    The parentheses is the key. Thats why I think its 1. Now that I think about it, I see how using BODMAS gives the same answer of 1. You work with the parentheses until you cant anymore.

    Now I see how dan330 could use BODMAS and still get 1. And 2(3) is 2 times 3, thats what I was taught. Solving that still working with the parentheses makes that 6. Then its 6
     
  25. Bob Maxey

    Bob Maxey Well-Known Member

    Joined:
    Sep 24, 2010
    Messages:
    4,836
    Likes Received:
    806
    Clue #1:

    Do not look at it as a math problem. Think every day life.
     

Share This Page

Loading...