Sign in

NewNcertmathematicsMatrices And Determinants

If $\mathrm{A}=\left[\begin{array}{lll}1 & 2 & 2 \\ 3 & 2 & 3 \\ 1 & 1 & 2\end{array}\right]$ and $\mathrm{A}^{-1}=\left[\begin{array}{lll}a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33}\end{array}\right]$, then $\sum_{\substack{1 \leq i \leq 3 \\ 1 \leq j \leq 3}} a_{i j}=$

✓ Correct answer: B

Want the full step-by-step reasoning?

Practice thousands more mathematics questions free on NewNcert
Start practicing →

Question ID #183448 · NewNcert