If$\mathbf { M } _ { R } = \left( \begin{array} { l l l l }
1 & 1 & 1 & 1 \
0 & 1 & 1 & 1 \
0 & 0 & 1 & 1 \
0 & 0 & 0 & 1
\end{array} \right)$

Question

If$\mathbf { M } _ { R } = \left( \begin{array} { l l l l } 
1 & 1 & 1 & 1 \
0 & 1 & 1 & 1 \
0 & 0 & 1 & 1 \
0 & 0 & 0 & 1
\end{array} \right)$

Examlex · Accepted Answer

The Answer is (a) Yes.
(b) No.
(c) Yes.
(d) Yes.

If $\mathbf { M } _ { R } = \left( \begin{array} { l l l l } 1 & 1 & 1 & 1 \\0 & 1 & 1 & 1 \\0 & 0 & 1 & 1 \\0 & 0 & 0 & 1\end{array} \right)$