3 prisoners are standing in a line to get out from jail, a guard comes and putputs a hat (black or white) on the head of each prisoner, each prisoner can see only the hat of the prisoner in front of him. The prisoners are asked from the last to the first what colorcolour of hat is on their head, if 2 out of 3 answer correctly they are all free,.
howHow can they plan a strategy in advance?
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받은편지함으로 가서 저희가 보낸 확인 링크를 눌러서 교정본을 받으세요. 더 많은 이메일을 교정받고 싶으시면:
또는