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Quasi-sociable numbers or reduced sociable numbers are numbers whose aliquot sums minus one form a cyclic sequence that begins and ends with the same number. They are generalizations of the concepts of betrothed numbers and quasiperfect numbers. The first quasi-sociable sequences, or quasi-sociable chains, were discovered by Mitchell Dickerman ...
The period of the sequence, or order of the set of sociable numbers, is the number of numbers in this cycle. If the period of the sequence is 1, the number is a sociable number of order 1, or a perfect number—for example, the proper divisors of 6 are 1, 2, and 3, whose sum is again 6.
Mrs. Ngin Kit Chit (Catherine) gave birth to 24 children while married to Mr. Goh Yong Twang (Joseph), all single births. They had enough male children to have a football (soccer) team. [31] 24 Kathleen Scott 1958 Ms Scott (b. 4 July 1914) of Dublin gave birth to her 24th child on 9 August 1958. Twenty of her children were still alive in 1990.
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Such research is a challenge because of the difficulty of controlling all the variables that are statistically related to birth order. Family size, and a number of social and demographic variables are associated with birth order and serve as potential confounds. For example, large families are generally lower in socioeconomic status than small ...
The origins of European engagement in marriage practice are found in the Jewish law (), first exemplified by Abraham, and outlined in the last Talmudic tractate of the Nashim (Women) order, where marriage consists of two separate acts, called erusin (or kiddushin, meaning sanctification), which is the betrothal ceremony, and nissu'in or chupah, [a] the actual ceremony for the marriage.
A female who has given birth once is primiparous and is referred to as a primipara or primip. A female who has given birth two, three, or four times is multiparous and is called a multip. Grand multipara describes the condition of having given birth five or more times. [11] Grand multiparity is associated with adverse maternal and neonatal ...
Relationships in a pedigree are shown as a series of lines. A horizontal line connects parents and a vertical line leads to their offspring. The offspring are connected by a horizontal sibship line and listed in birth order from left to right. If the offspring are twins then they will be connected by a triangle.