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Railways PYQCBT 1 2016

RRB NTPC · Question 68

Calculate the difference between the squares of the largest and smallest two - digit prime numbers. A. 9298 B. 9892 C. 9292 D. 9288

  1. D

  2. C

  3. A

  4. B

Show answer & explanation

Answer: (A) D

Explanation

The largest two-digit prime is 97 and the smallest is 11. 97² − 11² = 9409 − 121 = 9288.