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Questions  

If A  is a non-singular matrix, then

a
|A−1|=|A|
b
|A−1|=A−1
c
|A−1|=0
d
|A−1|==1|A|

detailed solution

Correct option is D

Since, |A|≠0,   therefore A−1 exist such that AA−1=I=A−1A                                                           ⇒    |AA−1|=|I|        ⇒ |A||A−1|=1                                                           ⇒|A−1|=1|A|

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