2. 120 60 180 90 _____ _____ 405
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.
> 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.