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If A is an invertible matrix of order 3 and |A|= 5, then find |adj A|.

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If A is an invertible matrix of order 3 and |A|= 5, then find |adj A|.

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|adj A| = |A|3 – 1 = 52 = 25

[∵| adj A| = |A|n – 1 , where n is order of A]

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