Real Numbers include all the rational and irrational numbers. Real numbers are denoted by the letter R. Real numbers consist of the natural numbers, whole numbers, integers, rational, and irrational numbers. Natural numbers, whole numbers, integers, decimal numbers, rational numbers, and irrational numbers are the examples of real numbers. 3/5, 10.3, 0.6, 12/5, 3/4, 3.46466466646666..., √ 2, √ 3 are few more examples.