### Matrices

goals
If a matrix has equal number of columns and rows then it is said to be a
If A is a square matrix, then $adjA^T - (adjA)^T$ is equal to
Transform $\left[ \begin{matrix} 1 & -1 & 2 \\ 2 & 1 & 3 \\ 3 & 2 & 4 \end{matrix} \right]$ into an upper triangular matrix by suitable column transformations
The number of possible orders of a matrix containing $24$ elements are:
If A is a symmetric and B skew-symmetric matrix and $A + B$ is nonsingular and  $C= (A + B)^{-1} (A - B),$ then