My daughter Aarti, aged 4, was seeing 6-sided dice for the first time. I rolled 2 dice and asked her to count the visible dots. To my utter surprise she replied, "36". I was sure that she did not know multiplication yet. On closer examination, it dawned on me that she had actually added all the visible dots, even the ones on the vertical sides of the dice. Knowing that the dots on the opposite faces of a dice add-up to 7, what was the sum of numbers on the top face of the 2 dice rolled?