CUET Mathematics - Let A = bmatrix 2 & -3 & 4 \\ 0 & 1 & 5 \\ -4 & 2 & 3 bmatrix and a_ij be any element of matrix A, i, j ∈ 1,2,3, then which of the following are TRUE? (A) Minor of a_23 = 16 (B) Minor of a_23 = -8 (C) Cofactor of a_23 = -16 (D) Cofactor of a_23 = 8 (E) Cofactor of a_13 = 4 Choose the correct answer from the options given below: | PYQs + Solutions

CUET Mathematics 2025 13 May Shift 2

Algebra

Medium

core

(A) and (C) only

(B) and (C) only

(B), (D) and (E) only

(A), (C) and (E) only

✅ Correct Option: 3

Related questions:

CUET Mathematics 2024 Slot 1

For a square matrix $A_{n \times n}$

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

(B) $|\mathrm{A}|=|\operatorname{adj} \mathrm{A}|^{\mathrm{n}-1}$

(D) $\left|\mathrm{A}^{-1}\right|=\frac{1}{|\mathrm{~A}|}$

22 May Shift 1

If $\begin{bmatrix} 1 & 2 & 1\end{bmatrix}$ $\begin{bmatrix}1 & 2 & 0 \\ 2 & 0 & 1 \\ 1 & 0 & 2 \end{bmatrix} \begin{bmatrix} 0 \\ 2 \\ x\end{bmatrix} = 0,$ then value of x is

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 2025 13 May Shift 2 PYQs

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