Answered

in geometric sequence how to find the sum of the first 5 terms the given is 4,12,36,108

Sagot :

PinkCloakid
you can use the formula an=a1 r n-1
find first the ratio..
JamieAnnid
use sn= [a1(1-r^n)]/ (1-r)
with a1 = 4, r=3, and n=5
you'll get 484