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Railways PYQCBT 1 2016

RRB NTPC · Question 57

If the ratio of the angles of a triangle is 2 : 4 : 3, then what is the sum of the smallest angle of the triangle and the largest angle of the triangle? A. 120° B. 100° C. 140° D. 110°

  1. A

  2. D

  3. B

  4. C

Show answer & explanation

Answer: (A) A

Explanation

2 + 4 + 3 = 9 parts = 180°, so 1 part = 20°: the angles are 40°, 80° and 60°. Smallest + largest = 40° + 80° = 120°.