Question

The sum of the following geometric series.
7-56+448-3,584+... when n=11

Answer 1

A. 6.681.060.239

Explanation:

a1 = 7

r = (-8)

n= 11

S11 = 7((-8)^11 - 1)/ (-8-1)

= -7/9 ( -8,589,934,591)

= 6.681.060.239