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STD 12 - 3 and 4 . determinant and metrices — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 3 and 4 . determinant and metrices4 Marks
MCQ
The order of $[x\,y\,z]\,\,\left[ {\begin{array}{*{20}{c}}a&h&g\\h&b&f\\g&f&c\end{array}} \right]\,\left[ \begin{array}{l}x\\y\\z\end{array} \right]$ is
  • A
    $3 \times 1$
  • ✓
    $1 \times 1$
  • C
    $1 \times 3$
  • D
    $3 \times 3$
✓

Answer

Correct option: B.
$1 \times 1$
Order will be $(1 \times 3)(3 \times 3)(3 \times 1) $
$= (1 \times 1)$.

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