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    Question

    What should come in place of the question mark (?) in

    the following question?
    A 6 Correct Answer Incorrect Answer
    B 11 Correct Answer Incorrect Answer
    C 4 Correct Answer Incorrect Answer
    D 7 Correct Answer Incorrect Answer

    Solution

    ATQ, [729 ├Ч (?)2] ├╖ 21 = 1701 729 ├Ч (?)2┬а= 1701 ├Ч 21 729 ├Ч (?)2┬а= 35721 (?)2┬а= 35721/729┬а (?)2┬а= 49 ? = 7

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