Question

There are 7 points on a circle how many chords can be drawn

Answer 1

Answer:

21

Step-by-step explanation:

if there are 2 points, there  will be one chord (1+0), if there are 3 points, there will be 3 chords (2+1+0). If there are 7 points, there will be 6+5+4+ 3+2+1+0 (21)   chords.