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RAJASTHAN ­ PET Rajasthan PET Solved Paper-2003

  • question_answer
    The value of\[\left| \begin{matrix}    43 & 1 & 6  \\    35 & 7 & 4  \\    17 & 3 & 2  \\ \end{matrix} \right|\]is

    A)  150             

    B)  0

    C)  \[-110\]            

    D)  \[-6\]

    Correct Answer: B

    Solution :

     \[\left| \begin{matrix}    43 & 1 & 6  \\    35 & 7 & 4  \\    17 & 3 & 2  \\ \end{matrix} \right|\] \[=43(14-12)-1(70-68)+6(105-119)\] \[=43\times 2-1\times 2+6\times -14\] \[=86-2-84=0\]


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