sum digit
61Addition — is the mathematical process of putting things together. The plus sign + means that two numbers are added together. For example, in the picture on the right, there are 3 + 2 apples meaning three apples and two other apples which is the same as… …
62CUSIP — The acronym CUSIP historically refers to the Committee on Uniform Security Identification Procedures, which was founded in 1964, during the paper crunch in Wall Street.[1] This 9 character alphanumeric code identifies any North American security… …
63File system permissions — Most modern file systems have methods of administering permissions or access rights to specific users and groups of users. These systems control the ability of the users affected to view or make changes to the contents of the file… …
64Ternary numeral system — Ternary or trinary is the base num|3 numeral system. Analogous to a bit , a ternary digit is known as a trit (trinary digit). One trit contains about 1.58596 (log 2 3) bit of information. Although ternary most often refers to a system in which… …
65Kempner series — The Kempner series is a modification of the harmonic series, formed by omitting all terms whose denominator expressed in base 10 contains a 9 digit. That is, it is the sum:{sum {n=1}^infty } frac{1}{n}where the prime indicates that n takes only… …
66Number — For other uses, see Numbers (disambiguation). A number is a mathematical object used to count and measure. In mathematics, the definition of number has been extended over the years to include such numbers as zero, negative numbers, rational… …
67Decimal floating point — Floating point precisions IEEE 754: 16 bit: Half (binary16) 32 bit: Single (binary32), decimal32 64 bit: Double (binary64), decimal64 128 bit: Quadruple (binary128), decimal128 Other: Minifloat · Extended precision Arbitrary precision… …
68Sudoku — Not to be confused with Sodoku. A Sudoku puzzle …
69Repeating decimal — A decimal representation of a real number is called a repeating decimal (or recurring decimal) if at some point it becomes periodic: there is some finite sequence of digits that is repeated indefinitely. For example, the decimal representation of …
70Arithmetic — tables for children, Lausanne, 1835 Arithmetic or arithmetics (from the Greek word ἀριθμός, arithmos “number”) is the oldest and most elementary branch of mathematics, used b …
