If |\table p , -q , 0 ; 0 , p , q ; q , 0 , p|=0, then which one of the following is correct?

Correct Answer is : pq is one of the cube roots of unity

p is one of the cube roots of unity

q is one of the cube roots of unity

\frac{p}{q} is one of the cube roots of unity

UPSC NDA II 2011 Mathematics Paper

Question : 55 of 120

Marks: +1, -0

If |

|=0, then which one of the following is correct?

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