Question

How many lines can be drawn from 6 points on a circle?

• A. 12
• B. 15
• C. 30
• D. 60

Answer 1

Answer: (B)

$\because$ Number of straight lines drawn from n points
${=}^n{C}_2$
$\therefore$ Number of straight lines drawn from 6 points
${=}^6{C}_2=\frac{6\times 5}{2}=15$