12th Class Mathematics Sample Paper Mathematics Olympiad Sample Paper-4

  • question_answer
    Consider the following statements. Assertion  : If  , then \[adj(adjA)=A\] Reason (R) : \[\left| \,\,adj\left( adj\,\,\,A \right)\,\, \right|={{\left| \,\,A\,\, \right|}^{{{\left( n-1 \right)}^{2}}}}\] A be n rowed non singular matrix. Then, which of the following is correct?

    A)  Both A and R are true and R is the correct explanation of A.

    B)  Both A and R are true but R is not the correct explanation of A.

    C)  A is true and R is false.

    D)  A is false but R is true.

    Correct Answer: B


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