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Magic Rods (Posted on 2003-11-11) Difficulty: 4 of 5
You need to make a set of five rods for a magic trick, with numbers on them ranging from 1 to 31 inclusive. Then you ask people to pick a number and show you only the top number of whatever rods it is on. From that you have to guess which number the person picked. This has to be done within a few seconds and isn't a matter of remembering what numbers are on them.

What numbers should be on each of the five rods?

See The Solution Submitted by Lewis    
Rating: 4.0000 (7 votes)

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Solution here Comment 13 of 13 |
31. If you are asked to make a set of 5 rods, each rod has a set of numbers 1 to 31 on them. The top number is 31 due to you can only use up to 31.
  Posted by Christopher Kostelec on 2003-12-15 23:01:10
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