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There are $7$ dots on a circle. What is the maximal number of intersection points outside the circle created by connecting these points with lines?

 Apr 7, 2021
 #1
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There are a maximum of 3*C(7,3) = 105 intersection points.

 Apr 7, 2021
 #2
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it's wrong ;-;

Guest Apr 7, 2021

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