Four criminals are caught and are to be punished. The Judge allows them to be freed if they can solve a puzzle. If they do not, they will be hung. They agreed.
The four criminals are lined up on some steps. They are all facing in the same direction. A wall separates the fourth man from the other three.
To summarize: Man 1 can see men 2 and 3. Man 2 can see man 3. Man 3 can see none of the others. Man 4 can see none of the others.
The criminals are wearing hats. They are told that there are two white hats and two black hats. The men initially donâ��t know what color is the hat they are wearing. They are told to shout out the color of the hat that they are wearing as soon as they know for certain what color it is.
They are not allowed to turn round or move. They are not allowed to talk to each other. They are not allowed to take their hats off.
If #1 sees two black hats or two white hats on #2 and #3, then he knows what his color is and would say so. If #2 and #3 have two different colored hats, he won't know what color his is and can't say anything. So if #1 keeps his yapper closed, #2 knows he sees two different hat colors. So all #2 has to do is look at #1 and he knows that his hat is the other color.
I think #2 is the right answer coz if #1 didn't shout and has seen two different colors like Irohner said #2 can guess his is of different color from #3.That is,if #3 is wearing a white hat then #2 has black on his head. Irohner wins anyway.