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RRB Junior Engineer / DMS / CMA 2019 · Question 145 of 3719

Find the GCD of 1.08, 0.36 and 0.9.

Mathematics - LCM and HCF

  1. Aa. 1.8
  2. Bb. 0.03
  3. Cc. 0.18Correct
  4. Dd. 18

Answer: C. c. 0.18

Explanation

Greatest common Divisor (GCD) = (highest common factor)HCF 1.08 = 108/100 0.36 =36/100 0.9 = 90/100 As we know, HCF of fractions = HCF of all numerators/LCM of all denominators So, HCF of 108, 36 and 90 = 18 LCM of 100, 100 and 100 = 100 GCD of 108/100, 36/100 and 90/100 = 18/100 = 0.18

Source: RRB JE 2019 CBT-1 (24-May-2019 Shift-1) — ixambee compilation with answer key and solutions · reliable-secondary

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