8C3 - 12 * 4C3 = 8
Any 3 vertices out of a rectangle only form a right triangles.
Then only 8 regular triangle left. (Cut out each of the 8 vertices)
On 2011-2-23 3:10, jalaj jaiswal wrote:
answer is 8 ,,, duno how
On Wed, Feb 23, 2011 at 12:31 AM, Sundi <sundi...@gmail.com
<mailto:sundi...@gmail.com>> wrote:
Is it not 8C3 = 56
On Feb 22, 9:55 pm, jalaj jaiswal <jalaj.jaiswa...@gmail.com
<mailto:jalaj.jaiswa...@gmail.com>> wrote:
> Think of the 8 vertices of a given cube. You are allowed to join
three
> vertices to form a triangle. How many such unique acute
triangles can you
> make ??
>
> --
> With Regards,
> *Jalaj Jaiswal* (+919019947895)
> Software developer, Cisco Systems
> B.Tech IIIT ALLAHABAD
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With Regards,
*Jalaj Jaiswal* (+919019947895)
Software developer, Cisco Systems
B.Tech IIIT ALLAHABAD
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