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Matrices — Mathematics STD 10 — Question

ICSE BoardEnglish MediumSTD 10MathematicsMatrices1 Mark
MCQ
If $A=\left[\begin{array}{ll}-1 & 2\end{array}\right]$ and $B=\left[\begin{array}{cc}1 & -2 \\ 0 & 3\end{array}\right]$
Which of the following operation is possible?
  • A
    $A - B$
  • B
    $A+B$
  • ✓
    AB
  • D
    BA
✓

Answer

Correct option: C.
AB
(c) $A B$
Explanation:
Two matrices A and B are conformable for the product AB if the number of columns in $A$ is same as the number of rows in $B$.
Number of columns in $A=$ Number of rows in $B$
2=2

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