" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
192 = 12.r^4
192 : 12 = r^4
16 = r^4
2 = r
Sn = a(r^n -1 )/r-1
S5 = 12 (r^5 -1) / 1
S5 = 12 .31
S5 = 372