Sunday, November 27, 2011

Greek Philosphers

Source: The Moscow Puzzles

Problem:
Three ancient Greek philosophers were taking a nap under a tree, a prankster
Smeared their faces with charcoal. When they got up , each of them started
Laughing ,each thinking other two are laughing at each other.
Suddenly one of them stopped laughing.
How did he realized his face is also smeared?

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