Question

Kelipatan 3 antara 100 -300
a.39.474
b.30.702
c.13.167
d.15.351

Answer 1

13.167 ,itu aritmatik kan.. barisannya = 102...297. terus cari n nya, abis itu pake rumus Sn

Answer 2

B = 3 U1=a= 102 Un = a + (n-1)b = 297 102+(n-1)3=297 3(n-1)=297-102 n-1=195/3 n-1=65 n=65+1=66 S66=66/2(2.102+65.3) =33(204+195)=33.399= 13167