" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
u1 = 8
beda = 5
un = a+ (n-1)xb
1218 = 8 + (n-1)x 5
1218 = 8 + 5n-5
1218-8= 5n - 5
1210 = 5n-5
1210+5 = 5n
n = 1215/ 5
n = 242