What is the answer to this question: "In one of my favorite puzzles a professional golfer can putt the ball only in distances of 3, 5, 7 and 11 feet. If he is 20 feet from the hole, what is the
smallest number of strokes he needs to sink it? (The answer is not four.)" http://www.nytimes.com/20...yton.html?ref=televisi on