<PRE><B>Question 773413</B>
What is the sum of an 8-term geometric series if the first term is 14 and the last term is -3,919,104?
-----
S(n) = (n/2)(a + L)
--------
n = 8 ; a = 14 ; L = -3,919,104
---------------------
S(8) = 4(-3919090) = -15676360
-----------
Cheers,
Stan H.
===============</PRE>