CUET Mathematics 2025 13 May Shift 2 PYQs

If $A$ is a square matrix of order 3 and $|A| = 5$, then the value of $|-AA^T|$ is

If $\begin{bmatrix} 1 & 3 & 9 \\ 1 & x & x^2 \\ 4 & 6 & 9 \end{bmatrix}$ is singular matrix, where $x \in \mathbb{N}$ (where N set of natural number), then x is equal to

If A is a square matrix of order 3 and |A| = -5, then |3A| is equal to