If the matrix $\begin{bmatrix}1 & 2\\3 & x\end{bmatrix}$ is a singular matrix, then the value of x is :
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 6
$\begin{bmatrix}1 & 2\\3 & x\end{bmatrix}$
so $\begin{bmatrix}1 & 2\\3 & x\end{bmatrix}=x-6=0$
so $x=6$