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  9. Q77

RRB NTPC 2021 · Question 77 of 131

Three bells started tolling together. Each of them then tolls after 0.25 sec, 0.1 sec, and 0.125 sec. After how many seconds will they again toll together?

  1. A0.1
  2. B0.2
  3. C0.5Correct
  4. D0.6

Answer: C. 0.5

Explanation

0.25, 0.1, 0.125 multiplied by 0.001. 250,100,125 LCM of 250,100,125=500 500 × 0.001=0.5 =0.5

Source: RRB NTPC 2021 CBT 1 Previous Year Paper (3 Feb) — ixambee compilation with answer key · reliable-secondary

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