Question

quantos termos tem a pg (2,4,8...,1024)

Answer 1

an = a1*q^(n-1)

1024 = 2*2^(n-1)

2^(n-1) = 512

2^(n-1) = 2^9

n-1 = 9

n = 10

existem 10 termos nessa pg