# Number system,base and symbols

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**3/5**Table 2.1 Number systems, bases, and symbols Number system Base Digital symbols Binary 2 0, 1 Ternary 3 0, 1, 2 Quaternary 4 0, 1, 2, 3 Quinary 5 0, 1, 2, 3, 4 Octal 8 0, 1, 2, 3, 4, 5, 6, 7 Decimal 10 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 Duodecimal 12 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B Hexadecimal 16 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F Vigesimal 20 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F, G, H, I, J

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