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Flat Out (Posted on 2003-12-17) Difficulty: 3 of 5
What is the minimum number of pennies that can be placed upon a table so that each penny touches three, and only three, others?

(All the pennies must lie flat on the table.)

See The Solution Submitted by DJ    
Rating: 4.3333 (9 votes)

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Big table! | Comment 19 of 24 |
The building block of 080 where the loops of the 8 are pennies is the key here. SilverKnight's answer I think is correct, as you can't fit three of these building blocks together, but you can fit four.
Edited on December 30, 2003, 2:08 pm
  Posted by Jack Squat on 2003-12-30 13:57:58
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