Alert icon
We're changing our privacy policy. This stuff matters.  Learn more  Dismiss

Liar Truthteller Brain Teaser

Loading...

Sign in or sign up now!
Alert icon
Upgrade to the latest Flash Player for improved playback performance. Upgrade now or more info.
452,962
Loading...
Alert icon
Sign in or sign up now!
Alert icon
There is no Interactive Transcript.

Uploaded by on Apr 15, 2009

How to get correct advice when you can only ask one question from either a liar or a truthteller (when you don't know who is what)

Category:

Education

Tags:

Download this video

LICENSE: Creative Commons (Attribution-Noncommercial-No Derivative Works).

For more information about this license, please read: http://creativecommons.org/licenses/by-nc-nd/3.0/.

High-quality MP4 Learn more

  • likes, 22 dislikes

Link to this comment:

Share to:

Top Comments

  • I would stab one of them in the leg. Whichever one cries "it hurts," would be the one I ask which door is correct.

  • I think there was something like this in a Yu Gi Oh episode lol

see all

All Comments (415)

Sign In or Sign Up now to post a comment!
  • i would have just asked him if the sky was blue...

  • @keonlo123

    Because you only get one question... If you asked them that then I guess you would know who the liar and the truthteller were, but you stilll wouldn't know what door to go through.

  • Don't be a pussy, flip a coin, take it like a man!

  • it's called The Labyrinth

  • Dude just ask any of them if they can go in and get the tresure for you then u will know who will do it and whos the lier

  • It seems like atleast half of the people commenting on this video don't even understand the context of this brain teaser.

  • Yo u talk to damn much in the first part

  • theres a way to always get the correct door= ask one of them "What would you say if i asked you 'is that the right door?'" the truth teller would say that door number 1 was wrong, the liar WOULD have said that door 1 is the right door, when really it is wrong, but he does not tell the truth, so he would say it is the wrong door.

  • @keonlo123 as u can only verify which guy is telling the truth but u still can't know which door is the favorable one

  • Why don't we ask one of them to answer something that is always true?

    eq: Will light escape from a black hole?

Loading...
Alert icon
0 / 00Unsaved Playlist Return to active list
    1. Your queue is empty. Add videos to your queue using this button:
      or sign in to load a different list.
    Loading...Loading...Saving...
    • Clear all videos from this list
    • Learn more