Similarly, in the second arrangement, the entries in the first row represent
the number of notebooks possessed by Radha, Fauzia and Simran, respectively The
entries in the second row represent the number of pens possessed by Radha, Fauzia
and Simran, respectively An arrangement or display of the above kind is called a
matrix Formally, we define matrix as:
Definition 1  A matrix is an ordered rectangular array of numbers or functions