Question: Let $A$ be a $2 \times 2$ matrix
Statement-1 : adj $(\operatorname{adj} A)=A$
Statement-2 : $|\operatorname{adj} \mathrm{A}|=|\mathrm{A}|$
Statement $-1$ is true, Statement $-2$ is false.
Statement-1 is false, Statement-2 is true.
Statement-1 is true, Statement $-2$ is true;Statement $-2$ is a correct explanation for Statement-1.
Statement-1 is true, Statement-2 is true; Statement-2 is not a correct explanation for statement-1.
Correct Option: , 4
Solution:
