What is a real number in math?
Any number that can be found in the real world is a real number.
Answer: The set of real numbers is a set containing all natural numbers (N), whole numbers (W), integers (Z), rational numbers (Q), and irrational numbers (Q').
Let us understand more about real numbers.
The set of real numbers is made by combining the set of rational numbers and the set of irrational numbers.
Any number that we can think of, except complex numbers, is a real number.
The real numbers include natural numbers or counting numbers, whole numbers, integers, rational numbers (fractions and repeating or terminating decimals), and irrational numbers.
For example, 3, 0, 1.5, 3/2, √5, -√3, -3, -2/3 and so on. All the numbers that are represented on the number line below are real numbers. Few points are marked with a blue dot to show different variants of real numbers including zero (whole number), 3/2 (fraction), 2 (natural number), and -5/2 (rational number).
Thus, the set of real numbers is a set containing all rational numbers (Q) and irrational numbers (Q').