" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a = 402, b = 3
Un = a + (n - 1)b
498 = 402 + (n - 1)3
498 = 402 + 3n - 3
498 = 399 + 3n
3n = 498 - 399
3n = 99
n= 33
Sn = 1/2 n (a + Un)
.....= 1/2 x 33 x (402 + 498)
.....= 16,5 x 900
Sn = 14.850
~ semoga membantu ~
jangan lupa jadiin yang terbaik