Multiple Choice Questions on If then det adj adj A ........ for 12th Standard Preparation

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Multiple Choice Questions

If then det adj adj A ........

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    If A=\begin{bmatrix} 1 & 2 & -1\\ & \\ -1 & 1 & 2\\ & \\ 2 & -1 & 1{} \end{bmatrix}then det [adj (adj A)]=

    124

    Incorrect Answer

    134

    Incorrect Answer

    144

    Correct Answer

     None of these 

    Incorrect Answer
    Explanation:

    134

    By: Swaminath Yadav
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