(iii)
Row of the given matrix $=2$
Column of the given matrix $=2$
So, order of the given matrix is, $2\times 3$
Hence, the matrix is a rectangular matrix $=2\times 3$
(iv)
Row of the given matrix
Column of the given matrix
So, order of the given matrix is, $2\times 2$.
As order of row = order of column
Hence, the matrix is a square matrix of$2\times 2$.