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Август
2024

Can you solve this numbers-on-foreheads puzzle?

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The following puzzle was posted to Futility Closet:

Alice and Bob are two infinitely intelligent logicians. Each has a number drawn on their forehead. Each can see the other's number but not their own. Each knows that both numbers are positive integers.

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The post Can you solve this numbers-on-foreheads puzzle? appeared first on Boing Boing.




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