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Linked rings (Posted on 2005-08-31) Difficulty: 2 of 5
You have a long strip of paper, one piece of tape, and some scissors. You must create two paper rings that are linked. The catch is that you must use the tape before touching the scissors, and you may not tear the tape or paper.

See The Solution Submitted by Tristan    
Rating: 3.6000 (5 votes)

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re(2): Solution | Comment 4 of 8 |
(In reply to re: Solution by Richard)

A general formula for a ring with n half-twists:

* n is even (n=2*m):
You will get two different rings. The rings are 'through' each other m times, and each has again n half-twists.
* n is odd:
You will get a single ring, with 2*n half-twists.

  Posted by Robby Goetschalckx on 2005-08-31 09:29:20

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