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Knights being Liars? (Posted on 2003-06-10) Difficulty: 4 of 5
You meet six men on a road side. The problem is that your wallet is mysteriously missing and you can't figure out if these men are truth tellers or not. So you ask a few questions and here are their answers:

Allan: "Fred stole it. Fred also hears quite well."

Barry: "Calvin is a liar. I did not steal it and I know Allan did not steal it."

Calvin: "Allan and Dwayne are both knights. Eddy stole it."

Dwayne: "Allan is a liar. I did not steal it."

Eddy: "Only 4 of us are knights. I did not steal it. I know Calvin did not steal it."

Fred: "I am deaf but read lips. Barry did not steal it."

Who stole the wallet?

P.S. You are sure that all of the men either lie or tell the truth. No one does both.

See The Solution Submitted by Jon    
Rating: 3.4615 (13 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Some Thoughts Some Thoughts On The Problem | Comment 23 of 24 |

From the given statements, it seems that none of the six men stole the traveller's wallet.

Accordingly, it seems most likely that the wallet must have been in the possession of the traveller all the time, although the traveller was unaware of this fact.


  Posted by K Sengupta on 2007-10-27 05:57:02
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