Excellent, simply excellent! Well then, here are the conditions of the task: You have two vessels, each of which will fit a different amount of water. The first will fit 9, the second - 4 . You need to measure out exactly 3. To start with both vessels are empty. You do not have a third vessel at your disposal. The water source is unlimited Remember: you have to complete the task in no more than 12 goes. In one go you can: - fill one vessel (it will become full); - pour water out of one vessel (it will become empty); - pour all the water from one vessel into the other (the first vessel will become empty); - pour enough water from one vessel to top up the other (the second vessel becomes full). What are you going to do?