Monday, August 16, 2010
Good Logical Puzzle
The Grand Master takes a set of 8 stamps, 4 red and 4 green, known to the logicians namely A, B, and C and loosely affixes two to the forehead of each logician so that each logician can see all the other stamps except those 2 in the Grand Master's pocket and the two on his own forehead. He asks them in turn if they know the colors of their own stamps:
What color stamps does B have? How?
Answers are expected as comments