Maths week 1

 Prime numbers

 A prime number is a whole number that can only be divided by itself and 1. Prime numbers become harder to calculate with the more digits they have.

Eulers number e

Euler's number, is an important mathematical constant approximately equal to 2.71828

This is the limit of (1+1/n)n as n approaches infinity, an expression that arises in the study of compound interest.

Square numbers

A number multiplied by itself (e.g 4x4=16) A cubed number is a number multiplied by itself then itself again. (e.g 4x4x4 = 64)

Square roots

The opposite of square number. (e.g the square root of 16 is 4) All positive numbers have 2 square roots (a negative and a positive)

structure

A data type in programing

Arrays

A collection of the same data types. Arrays are used to store a collection of related information.

Enumeration

Number systems

Ancient

Ancient number systems include Roman Numerals, Ancient Egyptian, Indian numerals ect. Different number systems were used in different places and all worked differently. For example Roman Numerals uses letters (I, V, X, L, C, M) and Ancient Egyptian uses symbols.

Binary

Binary is a number system which only makes use of 1 and 0 and each digit is revered to as a bit. Binary is used for almost all computers as it is extremally simple. It is used in computers for programming and storing data. This is because computers only understand ones and zeros

Hexadecimals

Hexadecimals is a number system that uses 16 digits (0 1 2 3 4 5 6 7 8 9 A B C D E F) It is used to simplify how binary is represented to make binary easier. Hexadecimals are also used for To define locations in memory. Hexadecimals can characterize every byte as two hexadecimal digits only compared to eight digits when using binary.

Conversersion