# Order or Size of Matrix

The order or size of a matrix is the number of rows and the number of columns that are present in a matrix.

For example, order of A is 3 ×2 (read as 3-by-2) and order of B is 3 ×3 (read as 3-by-3).

A matrix A of order **m × n** can be represented as

**A = [a _{ij}]_{m×n}**

The element a_{ij} belongs to i^{th} row and the j^{th} column, i being the row index and j being the column index.