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JEE Main & Advanced Sample Paper JEE Main Sample Paper-28

  • question_answer
    If A be a \[3\times 3\] matrix with real entries such that det. \[(adj\,A)=16\], then det. \[(adj(adj\,A))\] is equal to

    A)  16                                         

    B)  64

    C)  256                                       

    D)  512

    Correct Answer: C

    Solution :

    \[|adj.(adj.A)|=|adj.A{{|}^{2}}={{(16)}^{2}}=256\]


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