" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
2(2+1)=2.3=6
3(3+1)=3.4=12
4(4+1)=4.5=20
jadi 2,6,12,20
= 1 (1 + 1)
= 1 X 2
= 2
U2 = n (n + 1)
= 2 (2 + 1)
= 2 x 3
= 6
u3 = n (n + 1)
= 3 (3 + 1)
= 3 x 4
= 12
u4 = n (n + 1)
= 4 (4 + 1)
= 4 x 5
= 20