The decimal numeral system (also called base-ten positional numeral system, and occasionally called denary) is the standard system for denoting integer and non-integer numbers.
R-phrases (short for risk phrases) are defined in Annex III of European Union Directive 67/548/EEC: Nature of special risks attributed to dangerous substances and preparations.
The Renault 19 is a small family car that was produced by the French car manufacturer Renault between 1988 and 1996.
In recreational mathematics, a repunit is a number like 11, 111, or 1111 that contains only the digit 1 — a more specific type of repdigit.
Samsung Sens is the notebook computer series made by Samsung Electronics.
USS R-19 (SS-96) was an R-class coastal and harbor defense submarine of the United States Navy.