If $A=\left[\begin{array}{lll}1 & 2 & 2 \\ 2 & 1 & 1 \\ 1 & 2 & 1\end{array}\right]$ then $|\operatorname{adj}|\left(A^2\right) \mid=$
- A
9
- B
27
- C
729
- D
81
✓ Correct answer: D
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NewNcert › mathematics › Matrices And Determinants
If $A=\left[\begin{array}{lll}1 & 2 & 2 \\ 2 & 1 & 1 \\ 1 & 2 & 1\end{array}\right]$ then $|\operatorname{adj}|\left(A^2\right) \mid=$
9
27
729
81
Want the full step-by-step reasoning?
Question ID #183417 · NewNcert