CUET PG 2025 — Mathematics PYQ

List-I

List-II

(A) If
$$<br>\left[\begin{array}{cc}<br>\lambda -1& amp;0\\ <br>0& amp;\lambda -1<br>\end{array}\right]=0,<br>$$
then find the value of $\lambda$.

(I) 0

(B) If 
\Delta =&nbsp;<br>\begin{bmatrix}<br>1 &amp; 2 \\<br>2 &amp; 4<br>\end{bmatrix}, 
then $\Delta$ is  

(II) 1

(C) If $A=<br>\left[\begin{array}{cc}<br>1& amp;0\\ <br>0& amp;\frac{1}{2}<br>\end{array}\right]$,
then find $|A^{-1}|$.  

(III) -2

(D) If 
$\left[\begin{array}{cc}<br>a+1& amp;1\\ <br>1& amp;2<br>\end{array}\right]<br>=<br>\left[\begin{array}{cc}<br>-1& amp;1\\ <br>1& amp;2<br>\end{array}\right]$, 
then $a$ is  

(IV) 2