Posted by Blonde Glamour on Thursday, December 21, 2006 at 3:53pm.
suppose n points are in space, no three are collinear and no four or are coplanar. How many tetrahedral can be formed with these points as vertices?
1/24 *n*(n1)*(n2)*(n3)

math  alex, Tuesday, August 23, 2011 at 4:49pm
what is math
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