" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a1 = S1 = 1*(1+2) = 1*3 = 3
S2 = 2*(2+2) = 2*4 = 8
S2 = a1+a2
a2 = S2−a1 a2 = 8−3 = 5
r = a2−a1 r = 5−3 = 2
a1 = 3
r = 2.