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    Question

    323 × 15 + (?)² =

    4989 What should come in place of question mark (?) in the following questions?
    A 17 Correct Answer Incorrect Answer
    B 14 Correct Answer Incorrect Answer
    C 13 Correct Answer Incorrect Answer
    D 11 Correct Answer Incorrect Answer
    E 12 Correct Answer Incorrect Answer

    Solution

    323 × 15 + (?)² = 4989 => 4845 + (?)² = 4989 => (?)² = 144 => ? = 12

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