Whqtis the relationship between irrational and rational numbers.

a rational number is a real number that can be written as a simple fraction.

a rational number is a real number that cannot be reduced to any ratio between an integer and a real number.

Notice that rational and irrational numbers are contained in the large blue rectangle representing the set of Real Numbers. A rational number is a number that can be expressed as a fraction or ratio. The numerator and the denominator of the fraction are both integers.