CUET Mathematics - Let M_ij and A_ij denote respectively minors and co-factors of the element in the ith row and jth column of the matrix A = bmatrix 1 & 2 & -1 \\ 3 & 2& 3 \\ 4 & -1 & 0 bmatrix. Then (A) M_23 = 6 (B) M_23 = 9 (C) A_32 = -6 (D) A_33 = -9 Choose the correct answer from the options given below: | PYQs + Solutions

CUET Mathematics 2025 21 May Shift 1

Algebra

Medium

common

(A) and (C) only

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

(B) and (D) only

(A) and (D) only

✅ Correct Option: 1

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Which of the following is NOT correct?

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Let $A = [a_{ij}]_{3 \times 3}$ be a matrix, defined by $a_{ij} = \begin{cases} 2i+3j & , i < j \\6 &, i=j\\ 3i-2j & , i > j \end{cases}$ . The number of elements in A which are greater than 6, is

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The matrix $\begin{bmatrix} 0 & 0 & 0 \\ 0 & 0 & 0 \\ 0 & 0 & 0 \end{bmatrix}$ is a

(A) Null matrix

(B) Unit matrix

(D) Skew-symmetric matrix

Choose the correct answer from the options given below:

CUET Mathematics 2025 21 May Shift 1 PYQs

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