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Question

If A1=112031001/3, then

A
|A|=1
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B
A=11/37030001
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C
adj A=112031001/3
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D
A=11/3701/31003
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Solution

The correct option is D A=11/3701/31003
|A1|=1|A|=1
Now, adj A=|A|A1
adj A=112031001/3
Also, we know A=(A1)1
A=(adj A1)|A1|=11/3701/31003

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