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Math Help - Help Needed - Complicated Number Pattern

  1. #1
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    Help Needed - Complicated Number Pattern

    Hi Guys,

    I have rather a tricky number pattern here which need help from some maths expert.

    The number sequence goes like this :

    1st Term : 49
    2nd term : 54
    3rd Term : 41
    4th Term : 66
    5th Term : 25

    Letting the Term to be denoted as 'n'.

    Form an equation relating 'n' with the value of the term....

    This question has been killing me !!

    Been thinking for a few nights and am totally clueless on how to go.

    Desperately need help from you guys ..

    Need to submit to my teacher in 2 hours time =(

    Hope to hear from you guys soon...

    Thanks !!
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  2. #2
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    Quote Originally Posted by liukawa View Post
    Hi Guys,

    I have rather a tricky number pattern here which need help from some maths expert.

    The number sequence goes like this :

    1st Term : 49
    2nd term : 54
    3rd Term : 41
    4th Term : 66
    5th Term : 25

    Letting the Term to be denoted as 'n'.

    Form an equation relating 'n' with the value of the term....

    This question has been killing me !!

    Been thinking for a few nights and am totally clueless on how to go.

    Desperately need help from you guys ..

    Need to submit to my teacher in 2 hours time =(

    Hope to hear from you guys soon...

    Thanks !!
    look at the difference between each terrm & 50
    Last edited by mr fantastic; August 6th 2010 at 05:32 AM.
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  3. #3
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    I saw the link between 50 and the nth term.

    however, the addition and subtracting of the term is confusing me.

    Any clue about that?

    Thanks !
    Last edited by mr fantastic; August 6th 2010 at 05:32 AM.
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  4. #4
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    Quote Originally Posted by liukawa View Post
    I saw the link between 50 and the nth term.

    however, the addition and subtracting of the term is confusing me.

    Any clue about that?

    Thanks !
    Use (-1)^n or (-1)^(n+1). This is a common "trick".
    Last edited by mr fantastic; August 6th 2010 at 05:33 AM.
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  5. #5
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    Oh !

    Thanks alot dude !

    You have really helped me alot !
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  6. #6
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    Quote Originally Posted by liukawa View Post
    Oh !

    Thanks alot dude !

    You have really helped me alot !
    No problemo!
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