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Prime clock (Posted on 2004-08-01) Difficulty: 3 of 5
Given a clock, rearrange six consecutive numbers on its face, so the sum of every pair of adjacent numbers is a prime.

See The Solution Submitted by Federico Kereki    
Rating: 3.7500 (8 votes)

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solved! | Comment 4 of 17 |
8, 11, 12, 5, 6, 1, 2, 3, 10, 7, 4, 9
  Posted by sharon reese on 2004-08-01 23:26:52
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