CUET Mathematics - The matrix A = bmatrix-3 & 0 & 0\\0 & -3 & 0\\0 & 0 & -3bmatrix is a A. Symmetric matrix B. Scalar matrix C. Diagonal matrix D. Skew-symmetric matrix Choose the correct answer from the options given below: | PYQs + Solutions

CUET Mathematics 2026 21st May Shift 2

Algebra

Easy

core

A, B and C only

B, C and D only

A and C only

C and D only

✅ Correct Option: 1

Related questions:

15 May Shift 1

Match List-I with List-II

List-I	List-II
(A) If $A$ is a non-singular matrix of order $n$ , then $\vert A(\text{adj} A)\vert$ is equal to	(I) $\vert A\vert ^{n-1}$
(B) If $A$ is a non-singular matrix of order $n$ , then $\vert \text{adj}(\text{adj} A)\vert$ is equal to	(II) $\vert A\vert ^{n-2} A$
(C) If $A$ is a non-singular matrix of order $n$ , then $\text{adj}(\text{adj} A)$ is equal to	(III) $\vert A\vert ^n$
(D) If $A$ is a non-singular matrix of order $n$ , then $\vert (\text{adj} A)\vert$ is equal to	(IV) $\vert A\vert ^{(n-1)^2}$

Choose the correct answer from the options given below:

18th May Shift 2

If $x,y,z$ are non-zero real numbers such that $\begin{vmatrix} 10+x & 10 & 10 \\ 10 & 10+y & 10 \\ 10 & 10 & 10+z \end{vmatrix}=0$ , then the value of $x^{-1}+y^{-1}+z^{-1}$ is

30 May Shift 1

Assume $P$ , $Q$ , $R$ and $W$ are matrices of order $3 \times 3$ , $a \times 4$ , $b \times c$ and $d \times a$ respectively. If $PQ + WR$ is well defined, then the value of $ab + cd$ is:

CUET Mathematics 2026 21st May Shift 2 PYQs

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