Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Matrices Rank of a Matrix
The rank of \(\left[\begin{array}{cccc} 1 & 2 & 1 & -1 \\ -1 & 1 & 2 & 1 \\ 1 & 5 & 4 & -1 \\ -1 & 4 & 5 & 1 \end{array}\right]\) is
1
1
2
2
3
3
4
More than one of the above
5
None of the above