Number systems are mathematical methods for expressing numbers in a variety of ways.
A number is a numerical value that can be used to count and measure things along with the calculations.
The types of numbers are real numbers, natural numbers, whole numbers, rational and irrational numbers, and so on.
Number systems help in representing the numbers in a small symbol set. Binary, octal, decimal, and hexadecimal number systems are all examples of number systems that can be used to represent different aspects.