Dominoes spots from one to six are generally arranged as they are on six-sided dice, but because blank ends having no spots are used, seven faces are possible, allowing 28 unique pieces in a double-six set. However, this is a relatively small number especially when playing with more than four people, so many domino sets are "extended" by introducing ends with greater numbers of spots, which increases the number of unique combinations of ends and thus of pieces. Each progressively larger set increases the maximum number of pips on an end by three, so the common extended sets are double-nine, double-12,
Double standard of aging Double standard of aging The double standard principle can be applied to one’s age among many other distinctions. This phenomenon is called "double standard of aging" and is most prevalent towards females in the 35-55 age range. This is a complicated process that takes into consideration the gender of the observer and the observed as well as the social context of the situation. When judging a person with nobody around both males and females will judge differently from when judging that same person in a group setting. The physical changes that women undergo through the process of aging affects how