MCQ
$\left|\begin{array}{ccc}1 & 2 & -1 \\ 5 & 4 & 1 \\ 7 & 6 & 1\end{array}\right|=$
  • $0$
  • B
    1
  • C
    -1
  • D
    12

Answer

Correct option: A.
$0$
A

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