sjymb 发表于 2009-11-27 15:15:14

No: 19 November 25, 2009

Regular Tetrahedron


You will select X points within the volume occupied by a regular tetrahedron with edge length of 2 units. The condition is that there should be at least 1 unit distance between each of these points. What is the maximum possible value of X?

Note: The surfaces of the regular tetrahedron (including the edges and the vertices) are considered within the volume.http://www.puzzleup.com/2009/

geslon 发表于 2009-11-27 23:51:49

有点抽象，想不清楚。看来需要纸笔画画。
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