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Railways PYQCBT 1 2020

RRB NTPC · Question 27

How many numbers from 250 to 1000 are exactly divisible by 5, 6 and 7?

  1. 7

  2. 6

  3. 5

  4. 3

Show answer & explanation

Answer: (D) 3

Explanation

A number divisible by 5, 6 and 7 is a multiple of LCM = 210. Between 250 and 1000 these are 420, 630 and 840 – 3 numbers.