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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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