NextMockSearch exams, e.g. SSC CGL, UPPSC, Lekhpal
Railways PYQCBT 1 2016

RRB NTPC · Question 19

Find the HCF of 72, 108 and 180. A. 72 B.24 C.12 D. 36

  1. D

  2. B

  3. C

  4. A

Show answer & explanation

Answer: (A) D

Explanation

72 = 2³ × 3², 108 = 2² × 3³ and 180 = 2² × 3² × 5. HCF = 2² × 3² = 36.