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12th Class Mathematics Sample Paper Maths Olympiad Model Paper-8

  • question_answer
    If \[A=\left[ \begin{matrix}    1 & 0 & 0  \\    0 & 1 & 0  \\    a & b & -1  \\ \end{matrix} \right],\]  then \[{{A}^{2}}=\]

    A)  Unit matrix      

    B)  Null matrix

    C)  A                                

    D) \[~-A\]

    E)  None of these

    Correct Answer: A

    Solution :

    Not Available    


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