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Number of Quadrilaterals that can be formed in Decagon
Find number of Quadrilaterals that can be formed in a Decagon such that no side of Quadrilateral is common to side of Decagon.
I tried as follows:
Arbitrarily choose $6$ points on a circle. Then we ...
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Ways to create a quadrilateral by joining vertices of regular polygon with no common side to polygon
How many ways are there to create a quadrilateral by joining vertices of a $n$- sided regular polygon with no common side to that polygon?
It's quite easy to solve for triangles for the same question,...
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