CUET Mathematics 2025 21 May Shift 1 PYQs

Assume $p$, $q$, $\beta$ and $w$ are matrices of order $3 \times 3$, $q \times 4$, $\beta \times c$ and $x \times u$ respectively. If $PQ + WR$ is well defined, then the value of $ab + cd$ is:

Let $\begin{vmatrix} x & 2 \\ 18 & x \end{vmatrix} = \begin{vmatrix} -4 & -2 \\ -8 & -4 \end{vmatrix}$. Then

(A) $x = -4$

(B) $x = -6$

(C) $x = 4$

(D) $x = 6$

Choose the correct answer from the options given below:

Let $A = [a_{ij}]_{2 imes 3}$ and $B = [b_{ij}]_{3 imes 2}$, then $|5AB|$ is equal to