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probability

Posted: Thu Jan 20, 2011 3:06 pm
by jagdish
Three distinct vertices are randomly chosen among the vertices of cube. The probability that they are the vertices of equilateral triangle is

Re: probability

Posted: Tue Dec 18, 2012 5:27 pm
by kfoozminus
$\frac{8}{^8C_3}$

Untitled.png
here're shown 3 triangles out of 8
Untitled.png (16.58 KiB) Viewed 5476 times

Re: probability

Posted: Thu Feb 07, 2013 11:59 am
by jagdish
Thanks kfoozminus

Re: probability

Posted: Sat Mar 10, 2018 10:25 pm
by Mathlomaniac
mathlomaniac wrote: [/tfrac{8}{8C3}]