Five boxes are lined up in a row, numbered 1 to 5. A coin is hidden in one box. Box 1 says: 'The coin is in Box 3.' Box 2 says: 'The coin is not in Box 2.' Box 3 says: 'The coin is in Box 5.' Box 4 says: 'The coin is not in Box 1.' Box 5 says: 'Box 3 is lying.' If exactly four statements are true and one is false, which box holds the coin?
Box 3
If the coin is in Box 3: Box 1 is True, Box 2 is True, Box 3 is False (it claims the coin is in Box 5), Box 4 is True, and Box 5 is True (it correctly states Box 3 lies). This scenario yields exactly four true statements and one false statement.
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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