Tuesday, February 8, 2011

Brain Gymnastics 1

Brain Gymnastics 1


I don’t know who created, devised this puzzle:


There’re three men standing in line one behind the other, A in front, B in the middle and C behind. They know that there are three white and two black hats. Each one is wearing one of these hats, but no one knows or can see his own hat.


C can see B and A wearing their hats.

B can only see A’s hat as he can’t see behind him.

A can’t see what C and B are wearing as he can’t see behind him either.

No one knows the colors of the two remaining hats that’s left.


When first C was asked what color his hat was, he answered “I don’t know.”


Then B was asked. He also said “I don’t know.”


Yet when A was asked afterwards, who couldn’t see any hat at all, he said, “I know the color of my hat.” How could he know it? Could you reveal this?


February 2011

No comments: