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Railways PYQCBT 1 2016

RRB NTPC · Question 72

99 × 99 = ? A. 9791 B. 9801 C. 9881 D. 9901

  1. A

  2. B

  3. C

  4. D

Show answer & explanation

Answer: (B) B

Explanation

99 × 99 = (100 − 1)² = 10000 − 200 + 1 = 9801.