# Let $A$ and $B$ are square matrices of same order such that $|A|=|B|=1$ and $A(\operatorname{adj} A+\operatorname{adj} B)=B$. The value of $|A+B|$ is (A) $-1$ (B) 1 (C) 0 (D) 2 2. If $B B^{\prime}=I$, then $A B^{-1}$ is (A) $B^{-1} A$ (B) $A^{-1} B$ (C) $B A^{-1}$ (D) $B^{-1} A^{-1}$

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Let $A$ and $B$ are square matrices of same order such that $|A|=|B|=1$ and $A(\operatorname{adj} A+\operatorname{adj} B)=B$. The value of $|A+B|$ is (A) $-1$ (B) 1 (C) 0 (D) 2 2. If $B B^{\prime}=I$, then $A B^{-1}$ is (A) $B^{-1} A$ (B) $A^{-1} B$ (C) $B A^{-1}$ (D) $B^{-1} A^{-1}$