Insight · ★★★☆☆ · ~4 min
Crazy Clock
A clock's hands overlap how many times... (the counting trap).
by MindYourPuzzle
A clock has two hands both starting at 12. The minute hand makes 5 clockwise rounds while the hour hand makes 4 counterclockwise rounds — both returning to 12.
How many times do they cross (pass through each other), ignoring start and end?
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