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Knights,liars,and knaves (Posted on 2003-05-26) Difficulty: 1 of 5
Knights always tell the truth,liars always lie,and knaves alternate between truths and lies.

Suppose you ask a native,"Are you a knight,a liar,or a knave?" The native answers,and you are able to figure out what he is.

What is the native?

See The Solution Submitted by Tim Axoy    
Rating: 2.7500 (12 votes)

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Solution The Answer | Comment 8 of 14 |

If the native answered knave, the native could either be a truth telling knave or a lying liah.

If the native answered knight, the native could either be a truth telling knight or a lying liah.

If the native answered liah, the native could only be a knave, because a knight would tell the truth and answer knight, and a liah would lye and not say he was a liah.

ANSWER:  Therefore, the only possible way to tell who the native is, is if he answers liah, and would therefore be a knave.

  Posted by Chris, Phd on 2004-12-19 03:17:22
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