If A, B and C are invertible matrices of some order, then which one of – InterviewSolution

1.	If A, B and C are invertible matrices of some order, then which one of the following is not true? (a) adj A = \|A\| A-1 (b) adj(AB) = (adj A) (adj B)(c) det A-1 = (det A)-1 (d) (ABC)-1 = C-1B-1A-1
Answer» (b) adj(AB) = (adj A) (adj B)

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