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Matrices — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsMatrices1 Mark
MCQ
If the matrices has $13$ elements , then the possible dimension $($order$)$ it can have are:
  • ✓
    $1 \times 13$ or $13 \times 1$
  • B
    $1 \times 26$ or $26 \times 1$
  • C
    $2 \times 13$ or $13 \times 2$
  • D
    None of these
✓

Answer

Correct option: A.
$1 \times 13$ or $13 \times 1$
As we know the number of elements in a matrix $= ($no.of rows$) \times$ No.of columns.
Therefore for $13$ elements the rows and columns could only be $(13 \times 1)$ or $(1 \times 13)$

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