Ten points are chosen on a circle. A line segment is drawn between every pair of chosen points. How many line segments are drawn?

thank you and please help!

:)

lokiisnotdead Apr 26, 2020

#5**+3 **

The solution it gives me is:

There are \({10 \choose 2} =45\) ways to choose two of the points to connect with a segment, so there are \(\boxed{45}\) segments drawn.

lokiisnotdead Apr 26, 2020

#6**+3 **

I think I like Melody's method the best because it is a good way to visualize the solution. The official solution is the best if you are familiar with these types of problems.

AnExtremelyLongName
Apr 27, 2020