I quote from Meercat18 "The diagram is shown in the picture. The real numbers are divided into rational numbers and irrational numbers. Example of a rational number is any fraction like 1/2, while an irrational number is one that cannot be expressed as a fraction like π. Then, integers are also part of the rational numbers which include positive and negative whole number like -5, and +4. Whole numbers are positive numbers from 0 to whatever number. Lastly, the natural numbers are whole numbers with the exception of zero. So, these are numbers from 1 to infinity."
This is not my answer. I had to show it because it was so good.