Question

Qual o sexto termo da PG (5,25,125,...).

Answer 1

25×125= 3125 solução 3125

Answer 2

$a_n=a_1\cdot q^{n-1}$

$(5,25,125,\dots)$

$q=\dfrac{25}{5}=5$

$a_6=5\cdot5^{6-1}$

$a_6=5\cdot5^5$

$a_6=5^6$

$a_6=15~625$