Question

How many chords can be drawn through 11 points on a circle.

Answer 1

A chord is a line segment that touches 2 points of a circle. So, if 11 points are given 5 chords will take up 10 given points and 1 point will be left as it is. Conclusion- 5 chords can be drawn through 11 points on a circle.

Answer 2

Since there are 11 points the answer will be:
[(11 - 1)/2] x 11
= 55 chords
Therefore 55 chords can be drawn through 11 points