If A = [ * 20 c 1&2&3 5&0&7 6&2&5 ]and B = [ * 20 c 1&3&5 0&0&2 ]… - Vidyadip

MCQ

If $A = \left[ {\begin{array}{*{20}{c}}1&2&3\\5&0&7\\6&2&5\end{array}} \right]$and $B = \left[ {\begin{array}{*{20}{c}}1&3&5\\0&0&2\end{array}} \right]$, then which of the following is defined

A
$AB$
B
$A + B$
✓
$A'B'$
D
$B'A'$

✓

Answer

Correct option: C.

$A'B'$

c
(c) By inspection, $A'$is a matrix of order $3 \times 3$ and $B'$is a matrix of order $3 \times 2$. Therefore multiplication of these matrices is defined.

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