Question

Calcule o 6º termo da P.G. (27,81,....)

Answer 1

$P.G. (27,81,....)\\\\a_{n} = a_{6} =?\\ a_{1} =27\\q=3\\n=6\\\\ a_{n} = a_{1} * q^{n-1} \\\\\\ a_{6} = 27 * 3^{6-1} \\\\ a_{6} = 27 * 3^{5} \\ \\a_{6} = 27 * 243 \\\\ a_{6} = 6561$