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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: ( You must be logged in to post comments.)
  Subject Author Date
Answer!KC2006-01-21 01:36:12
another way to look at itronwilliams2005-11-29 11:39:07
Solutionsolution - i think!fiona2005-07-11 14:14:47
Questionhmmmj4411672005-06-26 00:05:14
SolutionsolutionJustin2005-05-15 02:59:03
Some Thoughtsre(3): N=4? probably notJustin2005-05-14 01:53:55
re(2): N=4? probably notTristan2005-05-14 01:47:54
Some ThoughtsN=3;N=4;N=5Justin2005-05-13 23:56:32
re: N=4? probably notJustin2005-05-13 23:33:36
re: N=3? - Max reachedTristan2005-05-08 02:20:43
re(2): N=3?Charlie2005-05-07 23:19:52
re: N=3?suman2005-05-07 21:01:55
N=4? probably notJer2005-05-06 18:53:53
Some ThoughtsN=3?Jer2005-05-06 18:43:27
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