1. Real Number 2. Rational Number 3. Irrational Number
1. Real Number: A real number is any number that can exist on the number line. This includes both rational and irrational numbers.
2. Rational Number: A rational number is any number that can be expressed as a fraction, where the numerator and denominator are both integers. This includes integers, terminating decimals, and repeating decimals.
3. Irrational Number: An irrational number is a number that cannot be expressed as a fraction. It is a non-repeating, non-terminating decimal. Examples include the square root of 2, pi, and e.