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Matrices And Determinants

WB JEE 2011

MCQ+1 / -0.252011

If \(z = \left| {\matrix{ 1 & {1 + 2i} & { - 5i} \cr {1 - 2i} & { - 3} & {5 + 3i} \cr {5i} & {5 - 3i} & 7 \cr } } \right|\), then \((i = \sqrt { - 1} )\)

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