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Question
Choose the correct alternative:
If A B, and C are invertible matrices of some order, then which one of the following is not true?
Options
adj A = |A|A–1
adj(AB) = (adj A)(adj B)
det A–1 = (det A)–1
(ABC)–1 = C–1B–1A–1
Solution
adj(AB) = (adj A)(adj B)
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