Posted by veronica on August 07, 2001 at 20:05:23:
a box contains three black and two white hats. three men standing in a line are facing forward and can see only the person or persons in front of them. each of the three men has one of the hats placed on their head but does not see which color. each man can, however, see any hats in front of him on another man, and each knows what was in the box. when the man in the rear is asked what color his hat is, he replies, "i don't know". when the man in the middle is asked he answers "i don't know". when the man in front is asked, he replies, "mine is black and that is no guess". he is correct. how did he know???????