What r the formulas of computer number system ​

Computer users binary language.

Binary20,1

Octal80,1,2,3,4,5,6,7

Decimal100,1,2,3,4,5,6,7,8,9

Hexadecimal160,1,2,3,4,5,6,7,8,9, A,B,C,D,E,F

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