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Matrices — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsMatrices1 Mark
MCQ
The order of the matrix $\begin{bmatrix}1\\3\\4 < \text{br} > \end{bmatrix}$ is :
  • A
    $1 \times 3$
  • ✓
    $3 \times 1$
  • C
    $1 \times 1$
  • D
    $3 \times 3$
✓

Answer

Correct option: B.
$3 \times 1$
Order of matrix with mm rows and nn columns is given as $\text{m} \times\text{n}$ Let $\text{A}=\begin{bmatrix}-1\\3\\4 \end{bmatrix}$
In the given matrix, there are $3 $ rows and $1$ column.
Hence, the order of $A$ is $3\times 1$.

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