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Question

If A=[i00i2](i=1),then A1=     [MP PET 1992]



Your Answer
A

Correct Answer
B

Your Answer
C

Your Answer
D


Solution

The correct option is B


If A=[i00i2]  ,  adj(A)=[i200i] and |A|=12
 A1=1|A|(adjA)=112[i200i]=[i002i]

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