A dice is made so that the numbers on opposite faces always add up to 7. It rests on a table with 6 on the top face. What is the sum of the numbers on the four vertical side faces?

Question

Accepted Answer

14. Since opposite faces add to 7 and the top is 6, the bottom face is 7 − 6 = 1. All six numbers together add to 1 + 2 + 3 + 4 + 5 + 6 = 21. Removing the top and bottom leaves 21 − 6 − 1 = 14 on the four side faces.

A dice is made so that the numbers on opposite faces always add up to 7. It rests on a table with 6 on the top face. What is the sum of the numbers on the four vertical side faces?

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