2016 AMC 12B Problems/Problem 15
Problem
All the numbers are assigned to the six faces of a cube, one number to each face. For each of the eight vertices of the cube, a product of three numbers is computed, where the three numbers are the numbers assigned to the three faces that include that vertex. What is the greatest possible value of the sum of these eight products?
Solution
First assign each face the letters . The sum of the product of the faces is . We can factor this into which is the product of the sum of each pair of opposite faces. In order to we use the numbers or .
See Also
2016 AMC 12B (Problems • Answer Key • Resources) | |
Preceded by Problem 14 |
Followed by Problem 16 |
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