Question

Numa PG a1= 1/4 e a7= 16, calcule a razão desse PG

Answer 1

a7 = a1 * q^6
16 = 1/4 * q^6
q^6 = 16 / 1/4
q^6 = 16 * 4
q^6 = 64
q^6 = 2^6
q = 2