The correct answer is real numbers.

The set of real numbers is composed of both rational numbers (numbers that can be expressed as a fraction of two integers) and irrational numbers (numbers that cannot be expressed as a fraction, such as √2 or π). These two sets together form the complete set of real numbers.

Would you like more details or have any questions?

Here are 5 questions to explore this topic further:

1. What are some examples of rational numbers?
2. Can you explain why the number π is considered irrational?
3. How do real numbers differ from complex numbers?
4. What is the difference between whole numbers and integers?
5. Are all integers also considered rational numbers?

Tip: Remember, all integers and fractions are rational numbers, while numbers like square roots that cannot be simplified to a fraction are irrational.