Teaching Haryana (HPSC) Assistant Professor Mock Test 2025 Engineering Mathematics Linear Algebra Matrix Algebra
Let J denote the matrix of order n × n with all entries 1 and let B be a (3n) × (3n) matrix given by
\(B=\left(\begin{array}{ccc}0 & 0 & J \\ 0 & J & 0 \\ J & 0 & 0\end{array}\right)\)
Then the rank of B is
1
2n
2
3n - 1
3
2
4
3
5
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