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The 5 jugs (Posted on 2005-08-18) Difficulty: 2 of 5
You have five different jugs, without any marks at all, with capacities of 3, 4, 5, 6 and 7 litres. Initially, the 3, 5 and 7-jugs are completely filled with liquid (so we have 15 litres of the liquid; in the diagram below, an "x" stands for 1 litre) and the other two are empty. The jugs are arranged in the circular manner shown below, which can't be changed:
                           | |
                         +-+ +-+
                         | o o |
                         | o o | 
                         +-----+
              | |                        | | 
            +-+ +-+                  +---+ +---+
            |  x  |                  | x x x x |
            | x x |                  |  x x x  |
            +-----+                  +---------+

                   | |           | |                   
                +--+ +--+     +--+ +--+
                | x x x |     | o o o |
                |  x x  |     | o o o |
                +-------+     +-------+
The goal is to achieve 3 litres in each of the 5 jugs, only by pouring liquid from one jug into an adjacent one. (That is, at any time, you can pour liquid from the 3-jug only into the 4-jug or to the 5-jug; or from the 7-jug only into the 4-jug or to the 6-jug, etc...)

See The Solution Submitted by pcbouhid    
Rating: 2.2500 (4 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
to Charlie | Comment 13 of 36 |

Charlie, it seems to me that you are a very good programmer and to be one, you must have an accurate logical reasoning.

I have some puzzles of my own, and two of them, I didnīt find yet the solution (by the way, this is the problem, I donīt even know that there is a solution) - I worked them by hand.

If you are available to help me in finding if there is a solution for a special one, in 3D, using the computer, write me (paulo.bouhid@globo.com).


  Posted by pcbouhid on 2005-08-18 23:16:34
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