Question

Determine o 31 termo da PG (4,6,9)

Answer 1

$\boxed{a_n = a_1*q^n^-^1}\\\\ q = \frac{a_2}{a_1} = \frac{6}{4} = \frac{3}{2}\\\\ \boxed{a_3_1 = 4*(\frac{3}{2})^3^0}$