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Line up (Posted on 2005-05-06) Difficulty: 4 of 5
Imagine a 3 dimensional grid with N x N x N points.
Place as many points as possible on this grid, such that there are no 3 points in a line (for N = 2, this is of course 8).
How much is it for N = 3, 4 or 5?

See The Solution Submitted by Hugo    
Rating: 3.5000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(2): N=3? | Comment 4 of 14 |
(In reply to re: N=3? by suman)

The central spot would link top edge pieces to bottom opposite edge pieces.
  Posted by Charlie on 2005-05-07 23:19:52

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