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Four usual dices are thrown on the ground. The total of numbers on the top faces of these four dices is 13 as the top faces showed 4, 3, 1 and 5 respectively. What is the total of the numbers on the faces touching the ground?

Four usual dices are thrown on the ground. The total of numbers on the top faces of these four dices is 13 as the top faces showed 4, 3, 1 and 5 respectively. What is the total of the numbers on the faces touching the ground? Correct Answer 15

In a usual dice, the sum of the numbers on any two opposite faces is always 7. Thus, 1 is opposite 6, 2 is opposite 5 and 3 is opposite 4.

Consequently, when 4, 3, 1 and 5 are the numbers on the top faces, then 3, 4, 6 and 2 respectively are the numbers on the faces touching the ground. The total of these numbers = 3 + 4 + 6 + 2 = 15.

Therefore, the total of the numbers on the faces touching the ground is 15.

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