Question

If $\left[\begin{array}{cc}-1& 3\\ 4& -5\\ 0& 2\end{array}\right]\left[\begin{array}{cc}1& 2\\ 0& 7\end{array}\right]=\left[\begin{array}{cc}-1& 19\\ \alpha & -27\\ 0& 14\end{array}\right]$, then the value of $\alpha$ is

• A. 5
• B. 4
• C. 7
• D. -14
• E. -5

Answer 1

Answer: (B)

Correct answer is (b) 4