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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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Solution | Comment 2 of 8 |
 
Let the corners of the strip be ABCD where
AD and BC are the larger sides. Draw a cut
line between these two larger sides. Tape
the shorter sides together and cut.
AB to DC (No twist) results in two separate
rings same length as original.
AB to CD (Half twist) results in one ring
whose length is twice the original.
AB to DC (Full twist) results in two linked
rings same length as original.
 

  Posted by Bractals on 2005-08-31 04:44:06
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