Question

The matrix $P=\left[\begin{array}{ccc}0& 0& 4\\ 0& 4& 0\\ 4& 0& 0\end{array}\right]$ is a

• A. square matrix
• B. diagonal matrix
• C. unit matrix
• D. none of these

Answer 1

The correct option is A square matrix

We know that, in a square matrix number of rows are equal to the number of columns.

So, the matrix $P=\left[\begin{array}{ccc}0& 0& 4\\ 0& 4& 0\\ 4& 0& 0\end{array}\right]$ is a square matrix.