Respostas

2014-06-10T09:30:24-03:00
20, 40, 60, 80, 100, 120, 140, 160, 180, 200, etc....
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A melhor resposta!
2014-06-10T09:49:15-03:00
20×1⇒20
20×2⇒40
20×3⇒60
20×4⇒80
20×5⇒100
20×6⇒120
20×7⇒140
20×8⇒160
20×9⇒180
20×10⇒200
20×11⇒220
20×12⇒240
20×13⇒260
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