Introduction:
A rational number is a number that can be expressed as a ratio of two integers. In other words, it is a number that can be written in the form of m/n, where m and n are integers and n is not equal to zero.

Explanation:
To understand the concept of a rational number, we need to understand the terms 'integer' and 'ratio'.

Integer:
An integer is a whole number that can be positive, negative, or zero. For example, -3, 0, 2, 5 are all integers.

Ratio:
A ratio is the comparison of two quantities. For example, if we have 4 red balls and 6 blue balls, the ratio of red balls to blue balls is 4:6 or 2:3.

Rational Number:
Now, coming back to rational numbers, we know that a rational number can be expressed as m/n, where m and n are integers and n is not equal to zero. Let's take an example to understand this better.

Suppose we have 5/2. Here, 5 is an integer and 2 is also an integer. If we divide 5 by 2, we get 2 with a remainder of 1. So, we can write 5/2 as 2 and 1/2. Here, 2 is an integer and 1/2 is a fraction. But, we can also write it as an improper fraction, which is 5/2. Hence, 5/2 is a rational number.

Conclusion:
In conclusion, a rational number is a number that can be expressed as a ratio of two integers. It is represented in the form of m/n, where m and n are integers and n is not equal to zero.

M are n are integers..