RRB Group-D Model Paper 16 with answers for online practice

Given:
Ratio of the angles of a triangle = 2 : 4 : 3
Formula:
Sum of angles of a triangle 180°
Calculation:
Ratio of angles of a triangle = 2x : 4x : 3x
According to the question
2x + 4x + 3x = 180°
⇒ 9x = 180°
⇒ x = 180°/9
⇒ x = 20°
Smallest angle of triangle = 2 × 20° = 40°
Greatest angle of triangle = 4 × 20° = 80°
∴ Sum of largest and smallest angle of triangle = 40° + 80° = 120°