If $A=\begin{bmatrix} 2&1 & 3 \\4 & 6 &1 \end{bmatrix}$ and $B=\begin{bmatrix}2 & 4\\3 & -2\\ 6& 5\end{bmatrix}, $ then
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → AB and BA both are defined
Order (A) = 2 × 3, Order (B) = 3 × 2
∴ Order (AB) = 2 × 2
Order (BA) = 3 × 3
Hence both are defined.