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Railways PYQCBT 1 2016

RRB NTPC · Question 63

The sum of two numbers is 119 and their HCF is 17 and LCM is 170, so the inverse sum of the numbers is ______. A. 119/501 B. 501/119 C. 7/170 D. 170/7

  1. A

  2. C

  3. B

  4. D

Show answer & explanation

Answer: (B) C

Explanation

Product of the numbers = HCF × LCM = 17 × 170 = 2,890. Sum of reciprocals = (a + b)/ab = 119/2,890 = 7/170.