Respostas

2014-07-17T21:49:38-03:00
an=a1. q^{n}
162=2. q^{5-1}
162=2. q^{4}
 \frac{162}{2} =  q^{4}
 3^{4} =  q^{n}
q= \sqrt[4]{ 3^{4} }
q=  3^{ \frac{4}{4} }
q=3

Razão = 3