" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a = 1
r = -3/1 = -3
Un = ar^(n-1)
-243 = -3^(n-1)
-3^5 = -3^(n-1)
5 = n-1
n = 6