33. You have only two vessels of 3l and 5l volume and you are given an unending supply of water. Can you find out how to get 4l of water just by using these two vessels?
First, fill the 3l vessel with water. Transfer all the water from the 3l vessel into the 5l vessel. Refill the 3l vessel again and pour it off into 5l vessel jug till it is full. In the 3l vessel, we now have 1-litre of water available. Empty the water from the 5l vessel completely. Pour the 1-litre water from 3l vessel to 5l vessel. Fill the 3l vessel with water and pour this into the 5l vessel. We now have 4l of water in the 5l vessel.
