1.

Let A be an nth-order square matrix and B be its adjoint, then \[\left| AB+K{{I}_{n}} \right|\]is (where K is a scalar quantity)

A.  \[{{(\left| A \right|+K)}^{n-2}}\]         
B.  \[{{(\left| A \right|+K)}^{n}}\]
C.  \[{{(\left| A \right|+K)}^{n-1}}\]         
D.  none of these
Answer» C.  \[{{(\left| A \right|+K)}^{n-1}}\]         


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