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      Question

      Four of the five parts numbered (1), (2), (3) and (4)

      are exactly equal. The number of that part which is not equal will be your answer .
      A √2401 - √2209 Correct Answer Incorrect Answer
      B √1849 - √1681 Correct Answer Incorrect Answer
      C √2304 - √2025 Correct Answer Incorrect Answer
      D √1296 - √1156 Correct Answer Incorrect Answer

      Solution

      except it, others are equal to 2 √2401 - √2209 = 49 – 47 = 2 √1849 - √1681 = 43 – 41 = 2 √2304 - √2025 = 48 – 45 = 3 √1296 - √1156 = 36 – 34 = 2

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