CUET Mathematics - Let A = [a_ij] is given by A = bmatrix 1 & -1 & 2 \\ 3 & 4 & -5 \\ 2 & -1 & 3 bmatrix. Then the matrix B = [b_ij], where b_ij = Minor of a_ij is: | PYQs + Solutions

CUET Mathematics 2025 27 May Shift 1

Algebra

Medium

common

$\begin{bmatrix} 7 & 19 & -11 \\ -1 & -1 & 1 \\ -3 & -11 & 7 \end{bmatrix}$

$\begin{bmatrix} 7 & -19 & 11 \\ 5 & -1 & -1 \\ 2 & 11 & 7 \end{bmatrix}$

$\begin{bmatrix} 7 & -5 & -3 \\ 19 & 1 & -11 \\ -11 & 1 & 7 \end{bmatrix}$

$\begin{bmatrix} 7 & 19 & -11 \\ -5 & 11 & 1 \\ -2 & -1 & -1 \end{bmatrix}$

✅ Correct Option: 1

Related questions:

21 May Shift 1

Let the matrix $A = \begin{bmatrix} 2 & 3 \\ 1 & 4 \end{bmatrix}$ . Then which of the following are true?

(A) adj $A = \begin{bmatrix} 4 & -3 \\ -1 & 2 \end{bmatrix}$

(B) det $(A) = 5$

(D) If $A^3 = \begin{bmatrix} a & b \\ c & d \end{bmatrix}$ , then $a + b = c + d$

Choose the correct answer from the options given below:

22 May Shift 2

If A and B are symmetric matrices of order 3 x 3 then the matrix $2AB - BA$ is:

3 June Shift 2

If $A$ is a square matrix such that $A^2 = A$ and $I$ is the identity matrix of the same order as $A$ , then $(I + 2A)^3 - 5A$ is equal to

CUET Mathematics 2025 27 May Shift 1 PYQs