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    Question

    What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.) 

    (?)2 + 6.113 = 25.92 – 19.03

    A 31 Correct Answer Incorrect Answer
    B 12 Correct Answer Incorrect Answer
    C 21 Correct Answer Incorrect Answer
    D 16 Correct Answer Incorrect Answer
    E 27 Correct Answer Incorrect Answer

    Solution

    (?)2 + 63 = 262 – 19 (?)2 + 216 = 676 – 19 (?)2 = 657 – 216 (?)2 = 441 ? = 21

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