## Base

### In mathematics, the term “base” refers to the number system that is used to represent numbers

In mathematics, the term “base” refers to the number system that is used to represent numbers. The base determines the number of digits that can be used and the value associated with each digit position.

The most common number system that we are familiar with is the decimal system, which has a base of 10. In the decimal system, we use 10 different digits (0-9) and the value of each digit is determined by its position in the number. For example, the number 536 in the decimal system represents (5 x 10^2) + (3 x 10^1) + (6 x 10^0).

However, there are other number systems that use different bases. One of the most well-known is the binary system, which has a base of 2. In the binary system, we only have two digits (0 and 1), and the value of each digit is determined by its position, just like in the decimal system. For example, the binary number 1011 represents (1 x 2^3) + (0 x 2^2) + (1 x 2^1) + (1 x 2^0), which is equal to 11 in decimal.

Other commonly used number systems include the octal system (base 8) and the hexadecimal system (base 16). In the octal system, we use eight digits (0-7), and in the hexadecimal system, we use sixteen digits (0-9 and A-F). Each digit position in these number systems represents a power of the base.

Understanding the concept of base is crucial when working with different number systems, especially in computer programming or in advanced mathematical fields such as number theory. Converting numbers between different bases involves understanding the value of each digit position and the rules governing the number system being used.

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