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    Question

    [4(1/2) + 4(1/3)] × 12 – 42 =

    ?2 What will come in place of question mark (?) in the given expression?
    A 8 Correct Answer Incorrect Answer
    B 12 Correct Answer Incorrect Answer
    C 15 Correct Answer Incorrect Answer
    D 7 Correct Answer Incorrect Answer
    E 16 Correct Answer Incorrect Answer

    Solution

    [4(1/2) + 4(1/3)] × 12 – 42 = ?2 => [(9/2) + (13/3)] × 12 – 42 = ?2 => [(27 + 26)/6] × 12 – 42 = ?2 => 53/6 × 12 – 42 = ?2   => ?2 = 106 – 42 => ? = √64 => ? = ±8

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