Question

Jumlah bilangan kelipatan 4 antara 200 dan 300

Answer 1

Un=a+(n-1)
300=200+(n-1)4
300=200+4n-4
300=196+40
4n=300-196
4n=104
n=104/4
n= 24

sn=1/2×n×(a+un)
s26=1/2×26×(200+300)
s26=1/2×26×500
s26=6500

Answer 2

300=200+(n-1)4
300=200+4n-4
300=196+40
4n=300-196
4n=104
n=104/4
n= 24

s26=1/2×26×(200+300)
s26=1/2×26×500
s26=6500