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    If A and B are square matrices of order 3 such that |A|=-1, |B|=3 then |3AB| is:
    Question

    If A and B are square matrices of order 3 such that |A|=-1, |B|=3 then |3AB| is:

    A.

    – 9

    B.

    – ­81

    C.

    – 27

    D.

    81

    Correct option is B

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