Question

If \begin{bmatrix} 1 & 2 \\\[0.3em] 3 &4 \end{bmatrix}$$\begin{bmatrix} 3& 1 \\\[0.3em] 2 &5 \end{bmatrix}$$=\begin{bmatrix} 7 & 11 \\\[0.3em] K&23 \end{bmatrix},then the value of k is

• A. $12$
• B. -$17$
• C. $-17$
• D. $-12$

Answer 1

Answer: (C)

$-17$

Answer 2

The correct option is (C): $-17$