Question

If adj[ $\begin{bmatrix} 1 & 0 & 2\\\ -1 & 1 & -2\\\ 0 & 2 & 1 \end{bmatrix}$= $\begin{bmatrix} 5 & m & -2\\\ 1 & 1 & 0\\\ -2 & -2 & n \end{bmatrix}$ then m+n =

• A. 2
• B. -3
• C. 5
• D. -5

Answer 1

Answer: (C)

5

Answer 2

The correct option is: (C) 5