" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
= (10-1) + (13-1)
= 9 + 12
= 21
urutan ke 10 = 10-1 = 9
urutan ke 13 = 13-1 = 12
jadi urutan 10 + urutan 13
= 9 + 12
= 21