CUET Mathematics 2024 - For a square matrix A_n x n (A) |adj A|=|A|^n-1 (B) |A|=|adj A|^n-1 (C) A(adj A)=|A| (D) |A^-1|=1|~A| | PYQs + Solutions

CUET Mathematics 2024

Algebra

Easy

(B) and (D) only

(A) and (D) only

(A), (C) and (D) only

(B), (C) and (D) only

✅ Correct Option: 2

Related questions:

If $A$ is a square matrix and $I$ is an identity matrix such that $A^{2}=A$ , then $A(I-2 A)^{3}+2 A^{3}$ is equal to :

The matrix $\left[\begin{array}{lll}1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1\end{array}\right]$ is a :

(A) scalar matrix

(B) diagonal matrix

(D) symmetric matrix

Choose the correct answer from the options given below :

If $[\mathrm{A}]_{3 \times 2}[\mathrm{~B}]_{\mathrm{x} \times \mathrm{y}}=[\mathrm{C}]_{3 \times 1}$ , then :

CUET Mathematics 2024 PYQs