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More hats! (Posted on 2002-07-15) Difficulty: 2 of 5
Three logicians, Albert, Bill and Carl, are wearing hats, which they know are either black or white but not all white. Albert and Bill can each see the other two logicians, but not Carl, who is facing away and cannot see them.

Each is asked in turn if they know the color of their own hat. The answers are:

  • Albert: "No."
  • Bill: "No."
  • Carl: "Yes."

    What color is Carl's hat and how does he know?

    (Taken from http://einstein.et.tudelft.nl/~arlet/puzzles/logic.html)

  • See The Solution Submitted by levik    
    Rating: 3.4615 (13 votes)

    Comments: ( You must be logged in to post comments.)
      Subject Author Date
    SolutionSolutionDej Mar2008-01-11 10:45:11
    partial answerK Sengupta2008-01-10 11:23:14
    answerPraneeth2007-09-14 06:31:12
    SolutionSolutionKevin2006-04-13 19:28:03
    SolutionMy answerfractaloon2005-09-27 13:34:24
    Good one!Linda Malone2003-12-17 20:27:04
    SolutionsolutionTalon50002003-07-31 11:00:56
    Solutionsimplezineera2003-05-26 14:21:14
    EASY!!zineera2003-05-26 14:20:51
    SolutionSolutionHenry2002-07-15 09:09:07
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