Question

Quantos termos existem na P.G(3, 6,..., 3.072

Answer 1

an = a1 * q^n-1
3072 = 3 * 2^n-1
1024 = 2^n-1
2^n-1 = 2^10
n-1 = 10
n = 10+1
n = 11

Resposta: A P.G. possui 11 termos.