Don't Need 'Em All
How many 1 foot by 1 foot bricks would it take to complete a building that's 20 feet long on all four sides and 20 feet high?
Fork in the Road
A hiker comes to a fork in the road and doesn"t know which way to go to reach his destination. There are two men at the fork one of whom always tells the truth while the other always lies. The hiker doesn"t know which is which though. He may ask one of the men only one question to find his way. Which man does he ask and what is the question?"