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Railways PYQCBT 1 2016

RRB NTPC · Question 72

Find the LCM of \(\dfrac{1}{15}, \dfrac{1}{2}, \dfrac{2}{25}, \dfrac{2}{15}\). A. \(\dfrac{40}{300}\) B. \(\dfrac{2}{10}\) C. \(\dfrac{1}{4}\) D. 2

  1. A

  2. B

  3. C

  4. D

Show answer & explanation

Answer: (D) D

Explanation

LCM of fractions = LCM of numerators ÷ HCF of denominators. Numerators 1, 1, 2, 2 have LCM 2; denominators 15, 2, 25, 15 have HCF 1. So the LCM is 2.