Jump to content


Welcome to BrainDen.com - Brain Teasers Forum

Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account.
As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends.

Of course, you can also enjoy our collection of amazing optical illusions and cool math games.

If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top.
If you have a website, we would appreciate a little link to BrainDen.

Thanks and enjoy the Den :-)
Guest Message by DevFuse
 

Photo
- - - - -


  • Please log in to reply
1 reply to this topic

#1 elochai

elochai

    Newbie

  • Members
  • Pip
  • 2 posts

Posted 23 March 2008 - 08:08 AM

A man finds himself in a room with two doors. He has to exit through one of those doors, one door will lead to freedom and the other leads to his death. At each door there is a guard. One of the guards will always lie and the other one will always tell the truth. The man does not know who lies and who tells the truth. He is allowed to ask one of the guards only one question. Assuming that the man wants to survive by exiting through the door that leads to his freedom, what is the question he must ask in order to be certain that he will walk out the correct door?
Spoiler for Solution

Edited by elochai, 23 March 2008 - 08:08 AM.

  • 0

#2 rookie1ja

rookie1ja

    Senior Member

  • Site Admin
  • PipPipPipPip
  • 1336 posts
  • Gender:Male
  • Location:Slovakia

Posted 23 March 2008 - 11:42 AM

this is one of my favorites ... it is also the most repeated puzzle on this forum - still coming in new variations (stories) B)) ... long discussion can be found in the thread entitled Honestants and Swindlecants III.

looking forward to new puzzles ... this topic is locked
  • 0

rookie1ja (site admin)
Optical Illusions
Support BrainDen

"To start: Press any key... Where's the 'any' key?" - Homer Simpson





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users