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

 Professor Smith (Posted on 2005-07-13)
Professor Smith has been studying the knights, knaves, and liars in their villages, and is currently living among them. You and your guide (who is a knight) approach a fork in the road and see five people standing in a line facing you. Your guide tells you there is one person he knows to be a knight, one person he knows to be a liar, one person he knows to be a knave, one he doesn't know at all, and Professor Smith. They said:

A: I am a knight.
B: I am a knight.
C: I am a knave.
D: I am a knave.
E: I am a knight.

A: E is a knave.
B: A is a knave.
C: D is a liar.
D: C is a knave.
E: B is a knight.

A: D's first statement is a lie.
B: C's first statement is a lie.
C: A's second statement is a lie.
D: B's third statement is true.
E: C's second statement is true.

A: D is Professor Smith.
B: C is not Professor Smith.
C: I am Professor Smith.
D: A is Professor Smith.
E: I am not Professor Smith.

Which one is Professor Smith? Remember: Knights always tell the truth. Liars always lie. Knaves alternate between truths and lies. Professor Smith is one of these three types, but you don't know which.

 Submitted by Dustin Rating: 3.3750 (8 votes) Solution: (Hide) Leming's solution is here. Lisa gives an excellent solution here.

 Subject Author Date Solution Math Man 2011-05-21 11:53:41 Sol Andre 2010-06-01 17:42:41 huh christopher 2005-11-08 14:34:03 hmm. Terence 2005-10-12 10:53:18 No Subject Jud 2005-08-11 11:32:08 solution? Shelagh 2005-08-10 17:06:04 solution celina 2005-08-05 22:02:13 solution? Paws 2005-08-02 06:10:51 solution scott 2005-08-01 13:23:53 solution scott 2005-08-01 13:22:50 Answer Amber 2005-07-18 02:15:44 solution. Brandon 2005-07-13 22:50:47 Solution & Reasoning Lisa 2005-07-13 12:21:51 Answer. Rex 2005-07-13 09:00:30 Solution Penny 2005-07-13 06:15:09 Solution and spoiler Leming 2005-07-13 06:14:01

 Search: Search body:
Forums (0)