Dominoes domino sets commercially available are double six (with 28 tiles) and double nine (with 55 tiles). Larger sets exist and are popular for games involving several players or for players looking for long domino games. The number of tiles in a set has the formula formula_1 for a double-"n" set. The most popular type of play are layout games, which fall into two main categories, blocking games and scoring games. The most basic domino variant is for two players and requires a double-six set. The 28 tiles are shuffled face down and form the "stock" or "boneyard". Each player draws
Double standard A policy of double standards is a situation when the assessment of the same phenomenon, process or event in the international relations depends on character of the relations of the estimating parties with assessment objects. At identical intrinsic filling of action of one country get support and a justification, and other – is condemned and punished. The following phrase became an example of policy of double standards: "One man's terrorist is another man's freedom fighter", entered into use by the British writer Gerald Seymour in his work "Harry's Game" in 1975. Double standard A double standard is the application of