" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
klo gk sàlah :v
b=U7-U3/7-3 => 22-10/4
b=12/4
b=3
U3=a+2b
10=a+2.3
a=4
S30 = n/2 (2a+(n-1)b)
= 30/2 (2.4+(30-1)3)
=15(8 + 87)
=15 (95)
=1425
yang B