Brainteaser: Two Jugs

(Image credit: Flickr user Bill Rogers)You have tw...  ...dit: Flickr user Bill Rogers)You have two plastic jugs filled with water. How can you put all the water...  ...t all the water into a barrel, without using the jugs or any dividers, and still tell which water came...  ...reeze them first. Take the ice...

http://www.neatorama.com/2013/03/20/Brainteaser-Two-Jugs/