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      Question

      Which two numbers should be interchanged to make the

      given equation correct? 21 × 4 + (84 ÷ 7) × 2 – 15 × 5 + 42 = 105 (Note: Interchange should be done of entire number and not individual digits of a given number.)
      A 4 and 2 Correct Answer Incorrect Answer
      B 84 and 42 Correct Answer Incorrect Answer
      C 4 and 5 Correct Answer Incorrect Answer
      D 7 and 21 Correct Answer Incorrect Answer

      Solution

      The correct answer is B

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