CTET 2 Math and Science 23 Dec 2021 Paper

Let assume that first angle is 2x
Second angle is 3x
Third angle is 5x
⇒ 2x + 3x + 5x = 180°
⇒ 10x = 180°
⇒ x = 18°
So,
The first angle = 2 × 18° = 36°
The second angle = 3 × 18° = 54°
The third angle = 5 × 18° = 90°
∴ The sum of smallest and largest angles of the triangle = 36° + 90° = 126°
The correct option is 2 i.e. 126°