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Brainteaser: Two Jugs

(Image credit: Flickr user Bill Rogers)

You have two plastic jugs filled with water. How can you put all the water into a barrel, without using the jugs or any dividers, and still tell which water came from which jug?

When you are ready for the answer, continue reading.

Highlight here for the answer: Freeze them first. Take the ice blocks out of the jugs and put them in the barrel. You will be able to tell which (frozen) water came from which jug. 


This article is reprinted with permission from Uncle John's Ahh-Inspiring Bathroom Reader.  Get ready to be thoroughly entertained while occupied on the throne. Uncle John rules the world of information and humor. It's simply Ahh-Inspiring!

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These are not so much fun with the answers available immediately. How about delaying them for a day or so and offering a t-shirt as a prize: one for the most correct and one for the most creative, but still functional.

If needed, I shall disqualify myself as a winner.
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I don't like this solution. First, how are you supposed to pour ice out of the jug? Second, I challenge anyone to examine two blocks of ice and identify which came from which jug. I suggest that you should pour one jug into the barrel, allow the barrel to freeze, and then pour the second jug's contents in.
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