JEE Main & Advanced Sample Paper JEE Main Sample Paper-36

  • question_answer
    Statement 1: The determinant of a matrix  is zero.
    Statement 2: The determinant of a skew symmetric matrix of odd order is zero.

    A)  Statement-1 is true, Statement-2 is true; Statement-2 is a correct explanation for Statement-1.

    B)  Statement-1 is true, Statement-2 is true; Statement-2 is not a correct explanation for Statement-1.

    C)  Statement-1 is true, Statement-2 is false.

    D)  Statement-1 is false, Statement-2 is true.

    Correct Answer: A

    Solution :

     The determinant of a skew symmetric matrix of odd order is zero\[i.e.,\] \[|A|\,\,=\,\,|-{{A}^{T}}|\,\,\Rightarrow |A|=-|A|\,\,\Rightarrow 2|A|\,\,=0\Rightarrow |A|=0\]


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