perplexus.info :: Liars and Knights : Liar Logic 2

Liar Logic 2 (Posted on 2021-06-21)

A and B are each either a knight or a liar. A says, "At least one of us is a knight." B says, "A is a liar." What are A and B?

See The Solution Submitted by Math Man

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Solution

| Comment 1 of 3

If B is a knight then A would be a liar, but A's statement would be true, which is a contradiction.

Therefore B is a liar and A is a knight.

Posted by tomarken on 2021-06-21 07:53:37

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