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Law of excluded middle

The law of the excluded middle (Latin: Tertium non datur) claims that every statement is true or false.

 


Proverbs

A famous saying is: "All Greeks lie," said the Greek. Is this true or not?

 


Question

The hairdresser shaves all the men in the village who don't shave themselves. Question: "Who shaves the hairdresser?"

 


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