Learn All Concepts of Chapter 3 Class 12 Matrices - FREE. Check - Matrices Class 12 - Full video

Suppose Madhu has 3 pens & 2 notebooks,

and Sanjay has 1 pen & 4 notebooks

How can we represent it in an easy way?

**
We use Matrix?
**

So, we write the data as

It is in the form of a table like

Now,

Suppose Tarun has 5 pens & 3 notebooks

**
How will we write this in a matrix?
**

Madhu has 3 pens & 2 notebooks

Sanjay has 1 pens & 4 notebooks

Tarun has 5 pens & 3 notebooks

So, our matrix looks like

In this matrix

So, in matrix B, we have

3 Rows,

2 Columns

& 6 elements - 3, 2, 1, 4, 5, 3

Similarly, we can have a matrix of any number of rows & columns, and elements can be numbers or variables

**
Example
**

## Suppose we have vertex of quadrilateral as

## A (1, 2), B (0, 8), C (4, 0), D (3, 3).

## How can we represent it as a matrix.