Let . Which statement is true about…

MATHEMATICS · Single correct · CBSE · Mathematics · Determinants · Determinants

Problem

Let A=(123246011)A=\begin{pmatrix}1&2&3\\2&4&6\\0&1&1\end{pmatrix}. Which statement is true about AA? (a) det⁡(A)=2\det(A)=2 and AA possesses an inverse. (b) det⁡(A)=0\det(A)=0 but AA possesses an inverse. (c) det⁡(A)=0\det(A)=0 and AA has no inverse. (d) det⁡(A)≠0\det(A)\neq0 and AA possesses an inverse.

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