A painter works in a circular room with no corners. She needs to paint an identical blue stripe across the exact center of every wall. She starts at the north wall and walks in a straight line across the room to the south wall, painting as she goes. Without lifting her brush, how many distinct walls must she paint during this single straight-line crossing?
One wall.
Because the room is circular, it has only one continuous wall, not multiple walls.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Medium. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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