CUET Mathematics - Let A = bmatrix 152 & 105 & 3 \\ 149 & 25 & 35 \\ 2 & 1 & 0 bmatrix. If A_ij denotes the co-factor of an element a_ij of the matrix A, then the value of a_11A_22 + a_12A_22 + a_13A_23 is equal to | PYQs + Solutions

CUET Mathematics 2025 22 May Shift 1

Algebra

Medium

core

-1

1529

✅ Correct Option: 2

Related questions:

15 May Shift 2

If $\begin{bmatrix} x - 2 & 3 & -2 \\ y & 0 & -4 \\ 2 & z & 0 \end{bmatrix}$ is a skew symmetric matrix, then the value of $x + y + z$ is

16 May Shift 1

Match List-I with List-II

Let $A$ be any invertible square matrix. Then

List-I	List-II
(A) $A - A^T$	(I) $\|A\|A^{-1}$
(B) $A A^T$	(II) Skew-symmetric
(C) $\det (A^{-1})$	(III) Symmetric
(D) $\text{adj} A$	(IV) $[\det(A)]^{-1}$

Choose the correct answer from the options given below:

14 May Shift 1

Let $A = \begin{bmatrix} 1 & 2 & 1 \\ -1 & 3 & 2 \\ 2&4&1\end{bmatrix}$ and $M_{ij}$ , $A_{ij}$ respectively denote the minor, co-factor of an element $a_{ij}$ of matrix A, then which of the following are true?

(A) $M_{22} = -1$

(B) $A_{23} = 0$

(D) $M_{23} = 1$

(E) $M_{32} = -3$

Choose the correct answer from the options given below:

CUET Mathematics 2025 22 May Shift 1 PYQs

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