05/22/2020 (2011: National Team Round, Problem 4)
Q: Six standard dice are stacked on the floor as shown below. On each die the sum of the opposite faces is 7. What is the maximum possible sum of the 21 visible faces? A: 89
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05/22/2020 (2011: National Team Round, Problem 3)
Q: If x and y are positive integers such that 5x + 3y = 100, what is the greatest possible value of xy? A: 160