Interview Puzzles :: Discussion
100 hat puzzle
prisoners stand in line, one in front of the other. Each wears either a
red hat or a blue hat. Every prisoner can see the hats of the people in
front â€“ but not their own hat, or the hats worn by anyone behind.
Starting at the back of the line, a prison guard asks each prisoner the
color of their hat. If they answer correctly, they will be pardoned.
Before lining up, the prisoners confer on a strategy to help them.
What should they do?
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Asked In : Alcatel-Lucent