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Math Help - enlighten me please!!

  1. #1
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    enlighten me please!!

    enlighten me please!!-oldmathsquestion.jpg
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  2. #2
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    Re: enlighten me please!!

    If you use the first four squares to set up a system of equations with the outer numbers as coefficents of 4 unknowns and the middle numbers as the RHS constant terms you can solve the system. Use this result find the value for 'a' missing number. I get -14.8421.

    I doubt this is what the author is looking for.
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  3. #3
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    Re: enlighten me please!!

    Thanks for looking at it, I never thought of using this method. but your right, the authors are probably looking for a constant with no decimal places. By the way this puzzle was ment for 12 year olds!!
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  4. #4
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    Re: enlighten me please!!

    The answer is 4!
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  5. #5
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    Re: enlighten me please!!

    Quote Originally Posted by katlego View Post
    The answer is 4!
    How did you get the answer 4?
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  6. #6
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    Re: enlighten me please!!

    I used the first square to get the last square.
    14-3=11
    14-5=9
    14-8= 6
    14-10=4
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  7. #7
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    Re: enlighten me please!!

    well that dose look pretty convincing, thanks a bunch dude!
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  8. #8
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    Re: enlighten me please!!

    I will be very disappointed if my answer is correct.
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