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?

n=3 is 27

n=4 is 64

n=5 is 125

Posted by KC on 2006-01-21 01:36:12