2. Solved Papers
  3. CEE Kerala Engineering

CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2001

  • question_answer
    If A and B are square matrices of order 3 such that\[|A|-1,|B|=3,\]then the determinant value of the matrix 3AB is equal to:

    A)  \[-9\]                   

    B)         \[-27\]

    C)  \[-81\]                

    D)         81

    E)  9

    Correct Answer: C

    Solution :

    The determinant value of matrix \[3AB={{3}^{3}}(-1)(3)=-81\]


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