If $A$ and $B$ are invertible matrices, then which of the following is not correct?

Question

$\text{adj}(A) = \det(A) A^{-1}$

$\det(A^{-1}) = [\det(A)]^{-1}$

$(AB)^{-1} = B^{-1}A^{-1}$

$(A + B)^{-1} = B^{-1} + A^{-1}$

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