Mathmatical sequences

Question

I am trying to determine some necessary (and sufficient conditions) for two real valued sequences {an}, {bn}

so that the sequence [(a0/b0) + (a1/b1) + ..... + (an/bn)](bn) has a finite limit as n ---> infinity.

Any suggestions is appreciated.

[For example, if (bn) is a constant sequence, then the above implies that the series a0 + a1 + a2 + ... must converge.]

Answer 1

i have a sequence that is:

60,57,51,42

what are the next three numbers