" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a = 20
b = 18 - 20 = - 2
Un = a + (n - 1)b
= 20 - 2(n - 1)
= 22 - 2n
suku ke 8 = 22 - 2(8)
= 22 - 16
= 6
rumus suku ke n = 22 - 2n