![]() ![]() Armed Forces have used the Social Security number as an identification number for Army and Air Force personnel since July 1, 1969, the Navy and Marine Corps for their personnel since January 1, 1972, and the Coast Guard for their personnel since October 1, 1974. A few duplications did occur when prenumbered cards were sent out to regional SSA offices and (originally) post offices.Įmployee, patient, student, and credit records are sometimes indexed by Social Security number. It has since come to be used as an identifier for individuals within the United States, although rare errors occur where duplicates do exist. The original purpose of this number was to track individuals' accounts within the Social Security program. Since then, parents have often applied for Social Security numbers for their children soon after birth today, it can be done on the application for a birth certificate. Today, an SSN is required regardless of the child's age to receive an exemption. In 1988, the threshold was lowered to two years old, and in 1990, the threshold was lowered yet again to one year old. The disappearance of these dependents is believed to have involved either children who never existed or tax deductions improperly claimed by non-custodial parents. During the first year of the Tax Reform Act, this anti-fraud change resulted in seven million fewer minor dependents being claimed. Before this act, parents claiming tax deductions were simply trusted not to lie about the number of children they supported. The Tax Reform Act of 1986 required parents to list Social Security numbers for each dependent over the age of 5 for whom the parent wanted to claim a tax deduction. īefore 1986, people often did not obtain a Social Security number until the age of about 14, since the numbers were used for income tracking purposes, and those under that age seldom had substantial income. However, since the Social Security numbers were not assigned in chronological order, Sweeney did not receive the lowest Social Security number, 001-01-0001. ![]() Fay of the Social Security Administration selected a record from the top of the first stack of 1,000 records and announced that the first Social Security number in history was assigned to John David Sweeney, Jr., of New Rochelle, New York. On December 1, 1936, as part of the publicity campaign for the new program, Joseph L. On November 24, 1936, 1,074 of the nation's 45,000 post offices were designated "typing centers" to type up Social Security cards that were then sent to Washington, D.C. Within three months, 25 million numbers were issued. How many valid SSNs are there? (Consider the sets A1, A2, and A3 of 9-digit sequences that fail properties (i), (ii), and (iii), respectively: Use the Principle of Inclusion-Exclusion on A1, A2, and A3.Social Security numbers were first issued by the Social Security Administration in November 1935 as part of the New Deal Social Security program. ![]() How many valid SSNs are there? (Consider the sets A1, A2, and A3 of 9-digit sequences that fail properties (i), (ii), and (iii), respectively: Use the Principle of Inclusion-Exclusion on A1, A2, and A3.)įor example, 915-08-1495 is not valid because it begins with a 9, and 480-00-2938 is not valid because its second group is 00. The first group cannot be 666, 000, or 019.įor example, 915-08-1495 is not valid because it begins with a 9, and 480-00-2938 is not valid because its second group is 00. A valid SSN must satisfy all of the following properties:ġ. A social security number (SSN) is a 9-digit sequence ***-**-**$*, where each * is a digit 0, 1, 2, or 9, and the dashes split the sequence into 3 groups.
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