If the matrix $\begin{bmatrix}1 & 2\

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Target Exam

CUET

Subject

-- Mathematics - Section A

Chapter

Matrices

Question:

If the matrix $\begin{bmatrix}1 & 2\\3 & x\end{bmatrix}$ is a singular matrix, then the value of x is :

Options:

-6

Correct Answer:

Explanation:

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 $x=6$