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Question

If A is a square matrix of order 3, then ∣∣Adj(AdjA2)∣∣ =

A
|A|2
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B
|A|4
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C
|A|8
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D
|A|16
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Solution

The correct option is C |A|8
Adj(AdjA2)
Q=A2(31)2=A24=|A|8

|A|8

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