Real numbers: The collection of all Rational and Irrational Numbers together are called Real Numbers. A number is called a Rational Number when it can be expressed in the form of p q , where p and q are both integers and q ≠ 0 . For example: 3 , 1 2 , 25 96 A number is called Irrational, when it cannot be expressed in the form of p q , where p and q are both integers and q ≠ 0 . For example: 2 , 15 We can say that, every point on the Number Line represents a unique Real Number.

Classify the numbers 22 7 as rational or irrational.

A rational number is a number that can be expressed as the quotient or fraction p q of integers, a numerator p and a non-zero denominator q . An irrational number is a number that cannot be expressed as a fraction for any integers and irrational numbers have decimal expansions that neither terminate nor become periodic. 22 7 is a rational number because it is of the form of p q , and q ≠ 0 .