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2. Skew binary number system - Wikipedia

   en.wikipedia.org/wiki/Skew_binary_number_system

   Each digit has a value of 0, 1, or 2. A number can have many skew binary representations. For example, a decimal number 15 can be written as 1000, 201 and 122. Each number can be written uniquely in skew binary canonical form where there is only at most one instance of the digit 2, which must be the least significant nonzero digit. In this case ...

3. Dot-decimal notation - Wikipedia

   en.wikipedia.org/wiki/Dot-decimal_notation

   Dot-decimal notation is a presentation format for numerical data. It consists of a string of decimal numbers, using the full stop (dot) as a separation character. [1]A common use of dot-decimal notation is in information technology where it is a method of writing numbers in octet-grouped base-10 numbers. [2]

4. Decimal - Wikipedia

   en.wikipedia.org/wiki/Decimal

   Place value of number in decimal system. The decimal numeral system (also called the base-ten positional numeral system and denary / ˈ d iː n ər i / [1] or decanary) is the standard system for denoting integer and non-integer numbers. It is the extension to non-integer numbers (decimal fractions) of the Hindu–Arabic numeral system.

5. Binary number - Wikipedia

   en.wikipedia.org/wiki/Binary_number

   To convert a hexadecimal number into its binary equivalent, simply substitute the corresponding binary digits: 3A 16 = 0011 1010 2 E7 16 = 1110 0111 2. To convert a binary number into its hexadecimal equivalent, divide it into groups of four bits. If the number of bits isn't a multiple of four, simply insert extra 0 bits at the left (called ...

6. Decimal representation - Wikipedia

   en.wikipedia.org/wiki/Decimal_representation

   Some real numbers have decimal expansions that eventually get into loops, endlessly repeating a sequence of one or more digits: 1 ⁄ 3 = 0.33333... 1 ⁄ 7 = 0.142857142857... 1318 ⁄ 185 = 7.1243243243... Every time this happens the number is still a rational number (i.e. can alternatively be represented as a ratio of an integer and a ...

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   mail.aol.com

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8. Digit sum - Wikipedia

   en.wikipedia.org/wiki/Digit_sum

   The decimal digital root of any non-zero integer will be a number in the range 1 to 9, whereas the digit sum can take any value. Digit sums and digital roots can be used for quick divisibility tests : a natural number is divisible by 3 or 9 if and only if its digit sum (or digital root) is divisible by 3 or 9, respectively.

9. Unum (number format) - Wikipedia

   en.wikipedia.org/wiki/Unum_(number_format)

   Negative numbers (s is 1) are encoded as 2's complements. The two encodings in which all non-sign bits are 0 have special interpretations: If the sign bit is 1, the posit value is NaR ("not a real") If the sign bit is 0, the posit value is 0 (which is unsigned and the only value for which the sign function returns 0)