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How do you solve this?

Discussion in 'Off Topic' started by Shadow, Jul 17, 2011.

  1. Shadow

    Shadow Has Balls Of Steel

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    Im fuckin terrible at math. Is this shit hard for anyone else?

    Judy had a number of raisins. After eating one, she gave half the remainder to her sister. After eating another raisin, she gave a third of what was left to her brother. Judy now had only six raisins left. How many raisins did she start with?
     
  2. Darkdrium

    Darkdrium 20% Cooler

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    She has six.
    She gave a third of what she had left before having six. That means she kept two thirds of what she had left. If six is two thirds, one third is three.
    She had nine before giving to her brother.
    She had ten before eating one.
    She gave half to her sister. She kept the other half. A half is ten.
    She had twenty before giving half to her sister.
    She had twenty one before eating one.

    She had twenty one raisins total.
     
  3. BITE_ME

    BITE_ME Bye-Bye

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    I see it as:
    -1
    1/2
    -1
    2/3
    6

    So she had 21 to start with.
     
  4. BITE_ME

    BITE_ME Bye-Bye

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    Hmmmmm.
    It's a trick question.
    You always start off with nothing,
    Till some one gives you some.
    So the answer is 0 :D
     
  5. Shadow

    Shadow Has Balls Of Steel

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    How long did that take you to figure out?

    Now I'm even more confused.
     
  6. Darkdrium

    Darkdrium 20% Cooler

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    I don't know, maybe a minute? You have to read everything two or three times to understand it well, so about that time. Then it's figuring out with what to start. In this case since we only have the number at the end, we start with that. Then we work our way back up. I did that while writing it down. Then I went over it twice before posting.
    Maybe five minutes max including writing.
     
  7. Shadow

    Shadow Has Balls Of Steel

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    Would the answer be 34 for this question?

    Which number is the next logical number in the following sequence of numbers: 2, 6, 14, 30, ..
     
  8. Benfica

    Benfica European Redneck

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    62. It's always twice the previous number + 2, n -> 2*n + 2
     
    Last edited: Jul 17, 2011
  9. Shadow

    Shadow Has Balls Of Steel

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    How does it come to that?
     
  10. SleepyHe4d

    SleepyHe4d fap fap fap

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    Just translate the text into a formula, not that fuckin hard.

    Code:
    ((x-1)/2-1)(2/3)=6            6   3   18
    			      - x - = -  = 9
             /(2/3) /(2/3)        1   2   2
    
    ((x-1)/2-1)     =9
            +1       +1
    (x-1)/2         =10
         x2          x2
    x-1             =20
     +1              +1
    x               =21
    
    
    Of course, you don't really have to do that. Just work backwords in your head and it takes like 10 seconds to figure it out.
     
    Last edited: Jul 17, 2011
  11. Shadow

    Shadow Has Balls Of Steel

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    So easy I'm embarrassed now.
     
  12. BITE_ME

    BITE_ME Bye-Bye

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    2x(2+1)=6
    2x(6+1)=14
    2x(14+1)=30
    2x(30+1)=62

    PS.Why are we doing your math homework?
     
  13. Shadow

    Shadow Has Balls Of Steel

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    It's an IQ test and these math questions are driving me crazy. It sickens me how bad I am at math. I'm not cheating I just wanna know the answers for personal knowledge.
     
  14. Twisted Metal

    Twisted Metal Anfractuous Aluminum

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    Now try solving 48 / 2(9+3).

    One of the most controversial expressions on the internet. The cause of more arguments than airplanes on a conveyor belt.
     
  15. dotnetbeast

    dotnetbeast Mr. Mayhem

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    HOW THE **** DID YOU ALL SOLVE THAT?????!??!!?
     
  16. SleepyHe4d

    SleepyHe4d fap fap fap

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    You're joking right? There's no argument there, there are simple rules to follow.

    The truly fucked up arguments come from 0.999 repeating = 1.0 :rolleyes:
     
    Last edited: Jul 17, 2011
  17. kiff

    kiff That guy from Texas. Give me some Cash

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    Judy had a number of raisins. X

    After eating one, X -1

    she gave half the remainder to her sister. (x-1) / 2

    After eating another raisin ((x-1) / 2 ) - 1

    , she gave a third of what was left to her brother. (2 (((x-1) / 2 ) - 1)) / 3


    Judy now had only six raisins left. How many raisins did she start with?

    (2 (((x-1) / 2 ) - 1)) / 3 = 6
    (((x-1) / 2 ) - 1) = 9

    (x-1) / 2 = 10
    (x-1) = 20
    x= 21
     
  18. BITE_ME

    BITE_ME Bye-Bye

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    2
     
  19. Zxanphorian

    Zxanphorian ( ͡° ͜ʖ ͡°)

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    There is nothing to solve because there is no equation. Problem Solved! :)
     
  20. Jacks:Revenge

    Jacks:Revenge ╠╣E╚╚O

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    it's funny because black people are bad at math ;)
     

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