" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Materi : Barisan Dan Dereta = 8
b = 4
U21 = .... ?
Un = a + (n - 1)b
U21 = 8 + (21 - 1 ) 4
U21 = 8 + 20 . 4
U21 = 8 + 80
U21 = 88