Riddle: Two men are standing on opposite sides of a bridge at night. The bridge is only wide enough for one person to cross at one time. There is only one flashlight that only has enough battery to last one and a half trips across the bridge. How can both men cross the bridge with just that one flashlight?
Answer: The first man will turn on the flashlight and cross halfway. Then he must turn off the flashlight and throw it to the other man. The second man must turn on the flashlight and shine it at the bridge. The first man will finish crossing the bridge. Then the second man can go all the way across the bridge with the flashlight on.