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 Double standard A double standard is the application of different sets of principles for similar situations. It is most commonly seen as a decisive psychological tool used to defend one’s ego or subconscious from the shortcomings of one’s own set of values or contrasting principles. It is the employment of a hypocritical and biased standpoint, with which to separate the seemingly bad in others from the bad in oneself by having two sets of rules for the same concept. Margaret Eichler, author of "The Double Standard," explains that a double standard “implies that two things which are the same are