# Hexadecimal

In mathematics and computing, hexadecimal (also base 16, or hex) is a positional numeral system with a radix, or base, of 16. It uses sixteen distinct symbols, most often the symbols 0–9 to represent values zero to nine, and A–F (or alternatively a–f) to represent values ten to fifteen.^{[1]}

## Basic Definitions[edit]

**bit**: A binary digit, either a 0 or 1.**byte**: A group of 8 adjacent binary digits (8 bits), on which a computer operates as a unit**binary**: The binary numeral system is a base 2 number system.**denary/decimal**: The decimal numeral system (also called base 10 or occasionally denary) has ten as its base.^{[2]}**hexadecimal**: In mathematics and computing, hexadecimal (also base 16, or hex) is a positional numeral system with a radix, or base, of 16^{[3]}. Click here for an excellent video about hexidecimal

## A helpful cheat sheet[edit]

## What you must know[edit]

You must be able to correctly answer the following questions:

- Define the term:
**bit** - Define the term:
**byte** - Define the term:
**binary** - Define the term:
**denary/decimal**(they refer to the same thing) - Define the term:
**hexadecimal**

## Resources[edit]

Click here for a slide deck that covers this topic nicely