The Burning Rope Logic Puzzle
The burning rope problem is a logic puzzle that doesn't require math, or pen and paper. It goes at follows: You have two ropes and a lighter. Each rope has the following property: If you light one end of the rope, it will take one hour to burn to the other end. They don't necessarily burn at a uniform rate. How can you measure a period of 45 minutes? The video below gives a hint and explains the solution.