**What is a matrix?**

A **matrix** is a rectangular array of elements or numbers. A matrix is usually enclosed in square or round brackets.

For example, **Matrix** of **dimensions** or **order** of **3 x 3** can be represented like:

**A=**

Here, both the number of **rows** and **columns** in a **matrix** is equal to 3. If, **order of matrix** is **4 x 5** then it means that there are 4 **rows** and 5 **columns** in a **matrix**.

Here, ** represents the element present in 1st ****row** and 1st **column** of **matrix**, ** represents element present in the 1st ****row** and 2nd **column** of **matrix** and so on.

The general position in a matrix can be represented by where i represents ith row and j represents jth column.

Lets take another example of **matrix** of **order 2 x 3**

A=

We can see that number of **rows** in **matrix** is 2 and number of **columns** is equal to 3.

So, the very basic question asked regarding **matrices** is to determine its **order** and to locate particular element present in the matrix.

If, you are given **matrix** **A=**

**Can you determine its order?**

The number of **rows** present in **matrix** is 4 and number of **columns** present in **matrix** is 5. Therefore, **order of matrix** is 4 x 5.

**Can you write elements present at position and ?**

We know that represents element present in the second row and 3rd column which is 8.

And, represents element present in the third row and 4th column which is 0.

In this post, you learnt about **order (dimensions) of matrices **and how to locate particular position in a **matrix**.