A normal house was built, with 4 walls and a roof. But each wall had a southern exposure. A bear comes up to the window. What color is the bear and why?
Each of the four walls of the same construction can never face the Southerly Direction, unless the said construction is located in the North Pole and we know that the skin color of any Bear in the North Pole is white.
Thus, the color of the bear must be white.