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In decimal numbers greater than 1 (such as 3.75), the fractional part of the number is expressed by the digits to the right of the decimal (with a value of 0.75 in this case). 3.75 can be written either as an improper fraction, 375/100, or as a mixed number, 3 + 75 / 100 .
Binary-coded decimal (BCD) are mixed base systems where bits (binary digits) are used to express decimal digits. E.g., in 1001 0011, each group of four bits may represent a decimal digit (in this example 9 and 3, so the eight bits combined represent decimal 93). The weights associated with these 8 positions are 80, 40, 20, 10, 8, 4, 2 and 1.
This page was last edited on 23 June 2020, at 13:36 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
All integers are rational, but there are rational numbers that are not integers, such as −2/9. Real numbers (): Numbers that correspond to points along a line. They can be positive, negative, or zero. All rational numbers are real, but the converse is not true. Irrational numbers (): Real numbers that are not rational.
This page was last edited on 23 June 2020, at 13:38 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
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[9] A number that is 4 or 5 modulo 9 cannot be represented as the sum of three cubes. [10] If an odd perfect number exists, it will have at least nine distinct prime factors. [11] 9 is a Motzkin number, for the number of ways of drawing non-intersecting chords between four points on a circle. [12]
In this numeral system, the mixed radix numeral 3 7 17 24 51 60 57 60 seconds would be interpreted as 17:51:57 on Wednesday, and 0 7 0 24 02 60 24 60 would be 00:02:24 on Sunday. Ad hoc notations for mixed radix numeral systems are commonplace. The Maya calendar consists of several overlapping cycles of different radices.