What are the next two terms of the following sequence?

8.9, 18.7, 25.88, 114.13, 127.244, 371.371, __, __

Note:

(i) The given sequence follows a relatively simple rule, and no complicated mathematical formulas are required to derive the missing terms.

(ii) The problem title provides a significant hint.

  A      C       E         G        I       K
     B       D        F         H       J

C  -  A  = B,   E  -  C =  D, etc,  but this gives no clue as to the value of K.

A == Y.Z   B==Z.Y   C=Y.Z + Z.Y
By this process K= I + J or to whatever I and J equate.


I think that's near enough for a full solution, without giving away values (3rd number, not asked for is 1969.633)

Posted by brianjn on 2008-07-31 20:54:18