BeContented:ksi:cwc, hv u offered the reasoning? Intuitively my answer was 'black' last night but I was too tired to write my reasoning. Now that you have confirmed black is correct, let me share my thoughts. The 2 non-blind men saw 1 black and 1 white hat. Hence, to guess their own colour, it could be a white probability is 1/3 and black is 2/3. Now if man 1 saw white on blind man andblack on man 2, then man 2 should see white on blind man and black on man 1, and remaining hats should be 1 white and 1 black. And if man 1 saw black on blind man and white on man 2 then man 2 should see black on blind man and white on man 1, and remaining hats should be 1 white and 2 blacks. Hence the [b]blind man should be wearing black hat[/b] since man 1 and man 2 cannot tell what colour they are wearing. cwc, tio bo?Xiao lao.....I also dunno right or wrong....I need to check back with higher order teacher (hubby lah....) but my reasoning is as follows :Man1 --> Either he sees 2B or 1W1B....and M1 can be either color. That's why does not know his own color.Man2 --> IF Blind is W, M2 can only be B based on above.....but since M2 cannot guess his own hat color, Blind man is NOT W.So we have established Blind is Black hat. Regardless of M1 hat color, M2 can be B or W.....that's why he does not know his own color too. Based on answer by Man1 & 2, Blind can only be Black...hence he knows. Am I confusing you??Interesting to see this question in this thread. Just curious, why Blind man cannot has white hat and the other Man 1 and Man 2 have Black hat. Why Blind man has black hat??