" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a1*(3/2)^{6-1) = 1215 /:(3/2)⁵
a1=160
S=160 * (1-(3/2)⁶)/(1-3/2)= 3325
lub
160+240+360+540+810+1215=3325 zl