Respostas

  • Ed8
  • Ambicioso
2014-08-12T02:03:45-03:00
(3,6,9,12,15,18,21...) Setimo termo 21
2014-08-12T02:13:51-03:00
An = A1+(n-1)*R

A7 = 3+ 6*3 = 21