Question

Soal nomor 8 yang mampu mohon please??

Answer 1

Dik : a = 3
r = 6/3 = 2
Dit : S10 = ....?
jwb : S10 = a(r^n - 1)/ r -1
= 3(2^10-1)/ 2-1
= 3(1024 - 1 )/ 1
= 3× 1023
= 3069