SOLUTION: Please help! I do not understand this at all i can't think of how to even start this:( According to Social Security Number Verification Service since 1973 social security numbers

Question 984974: Please help! I do not understand this at all i can't think of how to even start this:(
According to Social Security Number Verification Service since 1973 social security numbers have been assigned using the following method. The first three digits are determined by the ZIP Code of the mailing address shown on the application for the Social Security number and the rest have restrictions against the middle two (group #) being 00 and the last four (serial #) being 0000. In Texas, the SSN may begin with 449 � 467 or 627 - 645. On June 25, 2011, Social Security changed the process to SSN Randomization to better protect the identity of each individual.
Using this information, how many SSN�s may be assigned in Texas? According to the US Census Bureau, the population of Texas in 2009 was 24,782,302; will we run out of numbers?
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
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There are 99 possible group numbers, 9999 possible serial numbers, 19 area numbers from 449-467 and 19 area numbers from 627 to 645. Total possible numbers:
(19)(99)(9999)+(19)(99)(9999)=37,616,238 possible numbers.
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With the area number restrictions lifted, there are other restrictions which limits the choices of the first three digits to a total of 753. for a total of possible numbers=(753)(99)(9999)=745,395,453. The population of the USA is currently about 320,000,000, so fewer than half of the possible number is utilized.
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If necessary in the future, restrictions on the 247 disallowed area numbers could be lifted, and the total possible numbers would be about a billion.
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