CTET 2 Math and Science 3 Jan 2022 Paper

4x + 5x + 3x + 6x = 360°
⇒ 18x = 360°
⇒ x = 20°
6x = 6 × 20° = 120°
3x = 3 × 20° = 60°
⇒ Difference = 120° - 60° = 60°
∴ The difference of the greatest and the smallest angles of the quadrilateral is 60°.
The correct option is 3 i.e. 60°