SOLUTION: How many heptagons is it possible to construct by joining the vertices of a decagon? Is there a formula for this? It seems like there is a systematic way to figure this out, but I'
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Question 305922: How many heptagons is it possible to construct by joining the vertices of a decagon? Is there a formula for this? It seems like there is a systematic way to figure this out, but I'm stuck. Thanks.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
how many ways can a group of seven be selected from ten things, order does NOT count
10C7 = 120
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