CUET Mathematics - If A = bmatrix 4 & 3 \\ 2 & -1 \\ 1 & 0 bmatrix and B^T = bmatrix 1 & 2 & 3 \\ 2 & 1 & -1 bmatrix, then A - B is equal to | PYQs + Solutions

CUET Mathematics 2025 21 May Shift 2

Algebra

Medium

core

$\begin{bmatrix} 1 & 2 \\ 2 & 1 \\ 3 & -1 \end{bmatrix}$

$\begin{bmatrix} 3 & 1 \\ -2 & 0 \\ -2 & 1 \end{bmatrix}$

$\begin{bmatrix} 3 & 1 \\ 0 & -2 \\ -2 & 1 \end{bmatrix}$

$\begin{bmatrix} 4 & 3 \\ 2 & -1 \\ 1 & 0 \end{bmatrix}$

✅ Correct Option: 3

Related questions:

21 May Shift 1

Let A be any square matrix of order n, then which of the following are true?

(A) $| \text{adj } A| = |A|^{n-1}$

(B) $|A^{-1}| = \frac{1}{|A|}$

(D) $(A^T)^{-1} = (A^{-1})^T$

Choose the correct answer from the options given below:

CUET Mathematics 2024 Slot 1

For $I=\left[\begin{array}{ll}1 & 0 \\ 0 & 1\end{array}\right]$ , if $X$ and $Y$ are square matrices of order $2$ such that $X Y=X$ and $Y X=Y$ , then $\left(\mathrm{Y}^{2}+2 \mathrm{Y}\right)$ equals to :

30 May Shift 1

If $A = \begin{bmatrix} a & 1 & -1 \\ 0 & b & 4 \\ 4 & 4 & c \end{bmatrix}$ and $abc = 12$ , $b = 4a$ , then the value of $|A(adjA)|$ is:

CUET Mathematics 2025 21 May Shift 2 PYQs

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