Question

Thirty equally spaced points on the circumference of a circle are labelled in order with the

numbers 1 to 30. Which number is diametrically opposite to 7?​

Answer 1

22 is diametrically opposite of 7

Explanation:

A circle has a total of 360º

The circumference of the circle has 12 equally spaced points

Each point on the circumference=360°/30

= 12º per point

A point (n) opposite to 7 on the circumference will form 180° line on the circle, that is half of the circle.

Half of the circle=30 points/2

=15 points

Therefore,

15+7=22

22 is diametrically opposite 7