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Railways PYQCBT 1 2020

RRB NTPC · Question 60

Find the least number, which must be subtracted from 60065 to make it a perfect square.

  1. 40

  2. 30

  3. 35

  4. 20

Show answer & explanation

Answer: (A) 40

Explanation

245² = 60025, the largest square below 60065. 60065 − 60025 = 40 must be subtracted.