All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Logic > Liars and Knights
Veracity Verification (Posted on 2013-04-15) Difficulty: 2 of 5
Each of Alan and Ben is a knight, a knave or a liar. (An explanation of the three types is given here.)
Al says:
1. Ben and I do not have the same standard of veracity.
2. I never speak truthfully.

Ben says: 
1. Al is not a liar. 
2. I am not a liar.
Determine the type of each of Al and Ben.

No Solution Yet Submitted by K Sengupta    
Rating: 1.5000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution Too much Information (spoiler) | Comment 1 of 2
A2 can only be a lie told by a knave.
And B2 must be true.
Since Al is a knave, B1 is true also.
Since B1 and B2 are both true, Ben is a knight.

Final Answer:  Al is a knave and Ben is a knight.

And statement A1 is extraneous.  Or, if you prefer, the puzzle can be solved with all the statements except B1.  Or with all the statements except B2. 

Edited on April 15, 2013, 6:11 pm
  Posted by Steve Herman on 2013-04-15 10:55:38

Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information