4 men are buried up to their necks in the ground. They cannot move so can only look forward. Between A and B is a brick wall which cannot be seen through. They all know that between them they are wearing 4 hats, 2 x black and 2 x white, but they do not know what colour they are wearing. In order to avoid being shot one of them must call out to the terorist the colour of their hat. If they get it wrong, everyone will be shot. They are not allowed to talk to each other and have 2 minutes to think.
After 1 minute, one of them calls out.
Question 1: Which one of them calls out?
Question 2: What is the colour of his hat?
This is not a trick question. There are no outside influences nor other ways of communicating. They cannot move and are buried in a straight line. So A & B can only see their respective sides of the wall, C can see B, and D can see B & C.
Note:
If anyone can answer mail me.. If not i’ll update later..
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