Brain Teaser: Blue Forehead Room

Loading...

Sign in or sign up now!
Alert icon
Upgrade to the latest Flash Player for improved playback performance. Upgrade now or more info.
138,808
Loading...
Alert icon
Sign in or sign up now!
Alert icon
There is no Interactive Transcript.

Uploaded by on Apr 14, 2009

What happens when 100 perfect logicians have to figure out if they each have a blue forehead?

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, 8 dislikes

Link to this comment:

Share to:

Top Comments

  • All you have to do is lick your hand and slide it of your forehead where the paint is, than see if what comes off is blue.

  • 7 people had a blue forehead

see all

All Comments (112)

Sign In or Sign Up now to post a comment!
  • HAH nobody leaves, but everyone has a blue forehead

  • but if no one has a blue forehead, then they'd all leave because each would see no other has B, and conclude, since at LEAST one must have B, and therefore conclude that he/she has B.

  • simple everybody leaves

  • u talk too much :P, but yur AWESOME

  • u should write the Brain Teaser somewhere... like the description....

    u explainig turn a little confusing

  • @dRex002 I got a better question: How do you keep an idiot in suspense??

  • @dRex002 I guess the answer has to do with these 100 guys being perfect logicians because I watched the answer and still don't buy it; if you were in a room with 99 other guys and they all had blue foreheads and you saw that after the 1st time the lights went on; why would you have to have the lights turned off and on 98 more times before you left the room?

  • @InjunJoe ahhh yea I do know the answer. I got it before watching the answers video but after the hint

  • @dRex002 I guess you are equally stupid dRex since you clearly don't know the answer either

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