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A Binary Number is made up of only 0s and 1s.

110100

Example of a Binary Number

There is no 2, 3, 4, 5, 6, 7, 8 or 9 in Binary!

A "bit" is a single binary digit. The number above has 6 bits.

Binary numbers have many uses in mathematics and beyond.

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Q: What are the 20 uses of binary numbers in maths?

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5 multiplied by 2 is 10Answer:Consider the joke: There are 10 kinds of people in the world those who understand binary and those that don't.Binary uses powers of 2 to express numbers. Thus 20=1,21=2, 22=4 and so on (numbers shown in decimal). This is expressed as strings of numbers using either 0 or 1. Thus 0(binary) =0 (deciamal). 1(Binary)=1 (decimal) or 20, 10(binary)=2(decimal) or 21, 11=3 (decimal) =10+1(binary) = 21+20 and so on.

Base 8 is known as octal and base 16 is hexadecimal.. In octal, 0 to 7 are used, so if we counted to 20, the progression would be as follows: 1,2,3,4,5,6,7,10,11,12,13,14,15,16,17,20,21,22,23,24 In hexadecimal, the numbers 0-9 are used and the letters A-F are used. Counting to 20 would be as follows: 1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,10,11,12,13,14

The number 20 in binary is 10100

The binary numbers from 1 to 20 are...1 = 12 = 103 = 114 = 1005 = 1016 = 1107 = 1118 = 10009 = 100110 = 101011 = 101112 = 110013 = 110114 = 111015 = 111116 = 1000017 = 1000118 = 1001019 = 1001120 = 10100

Decimal 20 is 10100 in binary

15 = 111116 = 10000 17 = 10001 18 = 10010 19 = 10011 20 = 10100

To factorise is to find the numbers that divide into the original number by only using prime numbers. For example factorise 20 = 2 times 2 times 5

10100

23 29 31 37 41 43 47

20

a score is twenty:20

The number "10001" is the number 17 in binary (base two). 24 + 20 = 16 + 1 = 17

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