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  1. #1

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    fill the blank

    4 5 8
    525 ? 27
    Tapan

  2. #2
    So Unbanned DiGiTaIErRoR's Avatar
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  3. #3
    pathfinder NotLKH's Avatar
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    Originally posted by DiGiTaIErRoR
    I believe its similar to the sequence of X Y Z, where x^2 + y^2 = z^2, like this:

    3 4 5
    5 12 13
    7 24 25,


    however, in his case, the first term is a square, the third is a cube, and the second has some relationship between the first and the third.

    I'll think about it later.

    -Lou

  4. #4
    So Unbanned DiGiTaIErRoR's Avatar
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    I see a few patterns...

    like...

    4 5 8

    4+5 = 9 - 1 = 8

    giving something like:

    2 4 5 8 12 19 30

    So a wild guess at '?' would be 499. It does make a pattern atleast.

    I don't know about x^2+y^2=z^2, as:

    sqr(4^2+5^2) =+/-sqr(41)

  5. #5
    So Unbanned DiGiTaIErRoR's Avatar
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    Another pattern...

    sqr(4^2+8^2)= +/-4 sqr(5)

    Coincidence? Probably!

    If we do the same for the next series...

    sqr(525^2+27^2)= +/-3 sqr(30706)

    So '?' could be 30706....

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