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A Logic Accusation (Posted on 2003-10-01) Difficulty: 2 of 5
In an island peopled by Knights (who always say the truth) and Liars (who obviously always lie), two persons spoke about each other.

A said: "B would say I lie."

B said: "That is true."

Can anything be deduced as to what kind is each of them?

See The Solution Submitted by Federico Kereki    
Rating: 2.8667 (15 votes)

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solution | Comment 12 of 17 |

Since one of them will be accused of lying, they can't both be telling the truth,

Since there is an agreement by B, and a lier can't agree with a truth-teller, AND a truth-teller can't agree with a lier, that leaves as the only possible solution that they are both liers. (Where-in A lies about what B will say, and B lies by agreeing with the lie)


  Posted by whome? on 2005-01-27 16:39:20
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