- Jun 24, 2013
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First in an very occasional series of puzzles.
There were three prisoners, one of whom was blind.
They were offered their freedom if they could succeed in the following game. Their jailer produced three white hats and two red hats and, in the dark, placed a hat on each prisoner.
The prisoners were then taken into the light where, except for the blind man, they could see one another (but they could not see the hat on their own head).
The game was for any prisoner to state correctly the colour of the hat he himself was wearing.
The jailer asked one of the men who could see if he knew, and the man said ‘no’.
Then the jailer asked the other man who could see if he knew, and his answer was ‘no’.
The blind man at this point correctly stated the colour hat he was wearing, winning the game and freedom for all three.
What colour hat was he wearing, and how did he know?
There were three prisoners, one of whom was blind.
They were offered their freedom if they could succeed in the following game. Their jailer produced three white hats and two red hats and, in the dark, placed a hat on each prisoner.
The prisoners were then taken into the light where, except for the blind man, they could see one another (but they could not see the hat on their own head).
The game was for any prisoner to state correctly the colour of the hat he himself was wearing.
The jailer asked one of the men who could see if he knew, and the man said ‘no’.
Then the jailer asked the other man who could see if he knew, and his answer was ‘no’.
The blind man at this point correctly stated the colour hat he was wearing, winning the game and freedom for all three.
What colour hat was he wearing, and how did he know?