Answer by joriki for Number of ways to form hexagons by joining vertices of a...
Imagine each of the points glued to a spacer that ensures that the space clockwise from the point is free. Each such point/spacer pair takes up $2$ slots, leaving $20-6\cdot2=8$ other slots. Thus we...
View ArticleNumber of ways to form hexagons by joining vertices of a convex 20-gon, such...
If hexagons are formed by joining the vertices of a 20 sided convex polygon such that no side of hexagon is common with side of the polygon, then how many possible ways are there?I have no idea where...
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