Measuring PuzzlesStarter PuzzlesPuzzle GamesLogic PuzzlesJigsaw PuzzlesNumber PuzzlesCard PuzzlesEinstein PuzzlesSam Loyd PuzzlesAlgebra Puzzles
Library Eyes Puzzle
The Puzzle:

You knock a chair over in the library, and suddenly 20 eyes are looking at you.
How many people in the library?
Do you have the answer? Check against our solution!