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Math Number Patterns

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john...@gmail.com

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Sep 20, 2007, 4:03:57 AM9/20/07
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1. 7, 28, 24, 45


2. 120 60 180 90 _____ _____ 405

Proginoskes

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Sep 20, 2007, 4:35:15 AM9/20/07
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On Sep 20, 1:03 am, johnd...@gmail.com wrote:
> 1. 7, 28, 24, 45

Are we supposed to guess the next number, or what?

> 2. 120 60 180 90 _____ _____ 405

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.

--- Christopher Heckman


P.S. There is no unique answer to problems like these.

fernando revilla

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Sep 20, 2007, 11:33:13 AM9/20/07
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Proginoskes wrote:

> P.S. There is no unique answer to problems like
> these.

Even more, any number can be considered the next number,
it is sufficient to choose an adequate Lagrange interpolating
polynomial.

Fernando.

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