Health
Can you solve it? A head for hats – The Guardian
A Q about a queue
Alex Bellos’s Monday puzzleA Q about a queue
Todays puzzle concerns these three folk standing in a line, as illustrated below. They are all extremely logical people, and they can only see who is in front of them.
A hat seller shows them three white and two black hats. She places a hat on each person and hides the remaining two.
She asks: Does anyone know what colour hat they have?
No answer.
She repeats: Now does anyone know what colour hat they have?
No answer.
She asks again: Now does anyone know…
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