All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info
Home > Logic > Liars and Knights
These problems are from a very large set of questions about Liars who always lie about everything, and Knights who always tell the truth. Some questions also involve Knaves - people who strictly alternate between lying and telling the truth. (They are of course all indistinguishable from one another by outward appearance, and you must use logic to determine who's who.)
Difficulty: 3 of 5 Latest: The trio
You meet a trio of people, A, B, and C. You know that one of them is a knight, one is a liar, and one is a normal, but you are not sure which is which. Normals tell the truth and lie at random. You are allowed to ask three yes-or-no questions. What three questions can you ask to find out which is which?
(No Solution Yet, 1 Comments) Submitted on 2017-08-21 by Math Man   
Page 1 of 12   next >>    
Difficulty: 2 of 5Candy lover |
Posted on 2017-06-12 by Ady TZIDON (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Liars can figure | Rating: 2.00
Posted on 2017-04-24 by Ady TZIDON (Solution Posted, 4 Comments)
Difficulty: 3 of 5Lies, truth, and logic | Rating: 1.00
Posted on 2017-02-09 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 1 of 5Legally Blonde | Rating: 3.00
Posted on 2016-12-19 by Math Man (No Solution Yet, 8 Comments)
Difficulty: 3 of 5Find the killer | Rating: 5.00
Posted on 2016-06-20 by Ady TZIDON (Solution Posted, 5 Comments)
Difficulty: 1 of 5Never on Sunday |
Posted on 2016-04-21 by Ady TZIDON (Solution Posted, 1 Comments)
Difficulty: 1 of 56 or less liars | Rating: 2.00
Posted on 2015-11-13 by Ady TZIDON (Solution Posted, 16 Comments)
Difficulty: 2 of 5Island Adventure 2 |
Posted on 2015-04-21 by Math Man (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Island Adventure |
Posted on 2015-03-26 by Math Man (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Count the Liars | Rating: 3.00
Posted on 2014-12-23 by Ady TZIDON (Solution Posted, 6 Comments)
Difficulty: 3 of 5Odd people 2 | Rating: 2.67
Posted on 2014-10-07 by Math Man (No Solution Yet, 2 Comments)
Difficulty: 4 of 5Inherited Veracity II |
Posted on 2014-09-12 by Dustin (No Solution Yet, 2 Comments)
Difficulty: 3 of 5A Chamsonel Problem VII | Rating: 1.00
Posted on 2014-06-11 by K Sengupta (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Quiz Score Settlement | Rating: 1.00
Posted on 2014-05-13 by K Sengupta (No Solution Yet, 5 Comments)
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 (9)
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