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Railways PYQCBT 1 2016

RRB NTPC · Question 26

Find the least number required to be added to 3105 so that it is exactly divisible by 3, 4, 5 and 6.

  1. 15
  2. 12
  3. 25
  4. 10
Show answer & explanation

Answer: (A) 15

Explanation

LCM of 3, 4, 5 and 6 is 60. The next multiple of 60 after 3105 is 3120 (60 × 52), so 3120 − 3105 = 15 must be added.