Here Are Three Variations On A Classic Puzzle – Can You Solve Them All?Robbie Gonzalez1/11/15 4:00pmFiled to: sunday puzzlewater puzzleopticsphysicsmirrors23810EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkGIF I've always enjoyed water-distribution puzzles. They are simple in structure and usually straightforwardly posed, but their plain presentation belies their challenging nature. Here are three classic variations on the theme to wrap your head around.Sunday Puzzle(s) #15: Pouring And Partitioning Water I. You are handed two water glasses. The smaller glass can hold exactly four ounces of water, the larger exactly nine ounces. With nothing more than these two glasses and an endless supply of water, your task is to measure exactly six ounces of water. You can fill or empty either glass as many times as you wish. In the interest of conserving water, try to do this in as few steps as possible. What's the best you can do?Advertisement II. You return to the unlimited water supply. This time, you have in your possession two glasses measuring seven and eleven ounces. Again, you are permitted to fill or empty either glass. How many steps are required to fill one of the containers with exactly six ounces of water? III. Given a five ounce glass and a three ounce glass, measure exactly four ounces. Again, your water supply is limitless and you can fill and empty glasses as you please. We'll be back next week with the solutions – and a new puzzle! Got a great brainteaser, original or otherwise, that you'd like to see featured? E-mail me with your recommendations. (Be sure to include "Sunday Puzzle" in the subject line.)Advertisement Art by Jim CookeSOLUTION To Sunday Puzzle #14: How Much Of Yourself Can You See In A Mirror? As some of you pointed out in the comments, this is as much a physics problem as it is a puzzle, and the solution involves a basic understanding of optics. The answer: You need a mirror at least half your height to see the entire length of your body. Said another way: It is possible to see twice as much of yourself as the length of any normal wall-mounted mirror.