MCQ
If $ \displaystyle \begin{vmatrix}\text{a} &\text{amp; }\text{b} &\text{amp; 0}\\ 0 &\text{amp; a} &\text{amp; b}\\\text{b}&\text{amp; a}&\text{amp; 0}\end{vmatrix}=0,$ then the order is:
  • $3 \times 3$
  • B
    $2 \times 3$
  • C
    $2 \times 2$
  • D
    None of these

Answer

Correct option: A.
$3 \times 3$
There are $3$ rows and $3$ columns.Therefore the order of the matrix is $3 \times 3.$

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