A detective who was tall enough to look out a second-story window noticed a man lying dead on the pavement below, with a closed window right beside him and a heavy book clutched in his hand. The detective immediately declared it was murder, not suicide. How did he know?
The window was closed.
If the man had jumped or fallen out of the window himself, the window would be open. Since it was closed, someone else must have shut it from the inside after the fact, pointing to foul play.
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: Hard. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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