CUET Mathematics - If A and B are square matrices of order 3 such that |A| = 3 and |B| = -1, then |3AB| is equal to | PYQs + Solutions

CUET Mathematics 2025 13 May Shift 2

Algebra

Medium

core

-9

-81

-3

-27

✅ Correct Option: 2

Related questions:

27 May Shift 1

Let $A = [a_{ij}]$ is given by $A = \begin{bmatrix} 1 & -1 & 2 \\ 3 & 4 & -5 \\ 2 & -1 & 3 \end{bmatrix}$ . Then the matrix $B = [b_{ij}]$ , where $b_{ij}$ = Minor of $a_{ij}$ is:

22 May Shift 1

Let A be a non-singular square matrix of order 3 and $|adj A| = 5$ then $|A|$ is equal to

27 May Shift 1

The following system of equations:

$x + y - z = 7$

$4x + 2y - 2z = 3$

$3x + 2y - 4z = 5$

does not possess a solution if the value of $\lambda$ is:

CUET Mathematics 2025 13 May Shift 2 PYQs

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