In mathematics, a rational number is any number that can be expressed as the

quotientor fraction p/q of two integers, a numerator p and a non-zero denominator q.

Since q may be equal to 1, every integer is a rational number.

Ex: 2/3, 1.5 3, 2, etc. are rational numbers.

An irrational number cannot be expressed as a ratio between two numbers and it

cannot be written as a simple fraction (p/q) because there is not a finite number of

numbers when written as a decimal. Instead, the numbers in the decimal would go on

forever, without repeating.

Ex: √2, √3, √5, etc. are irrational numbers