CEED 2023
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Q1.Imagine a pentagon shaped building. The walls of the building are sides of the pentagon, and there is a watchtower at each vertex. Each watchtower can have guards who can watch two walls connected to the watchtower. What is the minimum number of guards required if each wall needs to be watched by at least 3 guards?
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Q3.Count the number of triangles in the image below.
CEED2023Q2·nat·Hard157 attempts
Shown below is a number puzzle. Only one piece can be slided horizontally or vertically in one move. What is the least number of moves required to bring the piece with number 10 to the empty position x?
Keyboards off — use the numpad, just like on exam day.