DeterminantHard

Question

The determinant =

Options

A.
B.2
C.3
D.none of these

Solution


Taking two common, applying C1 → C1 + C2 + C3

Applying  C2 → C2 - C1 & C3 → C3 - C1

Applying C1 → C1 + C2 + C3

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