I grow smaller the more I work, and I grow larger the longer I rest. When I am completely exhausted, I vanish entirely. What am I?
A pencil eraser
An eraser wears down (grows smaller) when used ('working'), and stays whole when left alone ('resting').
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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