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If A=[[-1,2,1],[1,-1,2],[2,1,1]], then d...

If `A=[[-1,2,1],[1,-1,2],[2,1,1]]`, then `det(a d j(adj A))=`

A

12

B

`(12)^2`

C

`(12)^3`

D

`(12)^4`

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The correct Answer is:
D
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