Kid's Math

Discussion in 'Computer Support' started by johndieb@gmail.com, Sep 20, 2007.

  1. Guest

    Problem 1. Find the Pattern.

    7, 28, 24, 45


    Problem 2. Supply the missing numbers.

    120 60 180 90 _____ _____ 405
     
    , Sep 20, 2007
    #1
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  2. Gordon Guest

    Not sure about this one

    This one's easy.

    now go away and do your OWN homework....
     
    Gordon, Sep 20, 2007
    #2
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  3. Alfred Guest

     
    Alfred, Sep 20, 2007
    #3
  4. Moleman Guest

    Find a kid to do it.
     
    Moleman, Sep 20, 2007
    #4
  5. why? Guest

    Too easy.

    Write it down and watch carefully the relation between the numbers.

    Me
     
    why?, Sep 20, 2007
    #5
  6. dadiOH Guest

    Oh, all right...270 135

    --

    dadiOH
    ____________________________

    dadiOH's dandies v3.06...
    ....a help file of info about MP3s, recording from
    LP/cassette and tips & tricks on this and that.
    Get it at http://mysite.verizon.net/xico
     
    dadiOH, Sep 20, 2007
    #6
  7. why? Guest

    What's the point without how.

    Me
     
    why?, Sep 20, 2007
    #7
  8. The point is the kid learning how to do this himself. :)
     
    Blinky the Shark, Sep 21, 2007
    #8
  9. Tina Peters Guest


    I pay people to do my thinking! :-D

    --Tina
     
    Tina Peters, Sep 21, 2007
    #9
  10. If you'd done that in school, you wouldn't know anything. (Which is a
    possibility; I don't know.)
     
    Blinky the Shark, Sep 21, 2007
    #10
  11. why? Guest

    Doesn't giving the answer avoid having to get the 'how'? Not posting
    either was the point :)

    Me
     
    why?, Sep 21, 2007
    #11
  12. IMO.
     
    Blinky the Shark, Sep 21, 2007
    #12
  13. phrogee Guest

    OK> Here's an answer received from "Math Forum@Drexel".
    Does this help?

    120 60 180 90 666 666 405. Obviously, the sequence is the polynomial

    (2990160 - 6888924 x + 5902372 x^2 - 2446935 x^3 + 525955 x^4 - 56181
    x^5 + 2353 x^6) / 240


    evaluated at x=1, x=2, x=3, etc.
     
    phrogee, Sep 22, 2007
    #13
  14. dadiOH Guest


    1. sum of two preceding (180 + 90 = 270)
    2. result divided by 2 (270/2 = 135)

    1. sum of two preceding (270 + 135 = 405)
    etc.


    --

    dadiOH
    ____________________________

    dadiOH's dandies v3.06...
    ....a help file of info about MP3s, recording from
    LP/cassette and tips & tricks on this and that.
    Get it at http://mysite.verizon.net/xico
     
    dadiOH, Sep 22, 2007
    #14
  15. why? Guest

    It's simpler than that, don't need the addition, although it's an
    alternative option it wasn't the 1 I saw right away.

    I started with step 2 in place of your step 1. Then see what happens :)

    <snip>

    Me
     
    why?, Sep 22, 2007
    #15
  16. who'sthat Guest

    Polynomial? This is a standard question on a college entrance exam and
    you'd fail miserably.
     
    who'sthat, Sep 22, 2007
    #16
  17. Guest

    , Sep 22, 2007
    #17
  18. who'sthat Guest

    who'sthat, Sep 22, 2007
    #18
  19. dadiOH Guest

    You mean...

    1.5 * 90 = 135
    1.5 * 180 = 270

    ?


    --

    dadiOH
    ____________________________

    dadiOH's dandies v3.06...
    ....a help file of info about MP3s, recording from
    LP/cassette and tips & tricks on this and that.
    Get it at http://mysite.verizon.net/xico
     
    dadiOH, Sep 22, 2007
    #19
  20. why? Guest

    Yes, only 1 operation the same for each pair.

    Me
     
    why?, Sep 22, 2007
    #20
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