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Railways PYQCBT 1 2016

RRB NTPC · Question 98

Compute: 7/5 + 31/21 + 23/52 A. 18339/5640 B. 18119/5460 C. 18330/4780 D. 18119/4780

  1. B

  2. A

  3. D

  4. C

Show answer & explanation

Answer: (A) B

Explanation

LCD = 5 × 21 × 52 = 5460. 7/5 = 7644/5460, 31/21 = 8060/5460 and 23/52 = 2415/5460. Sum = 18119/5460.