Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Matrices Rank of a Matrix
If M is a 7 × 5 matrix of rank 3 and N is a 5 × 7 matrix of rank 5, then rank (MN) is
1
5
2
3
3
2
4
More than one of the above
5
None of the above