SOLUTION: Social Security Numbers A Social Security number is used to identify each resident of the United States uniquely. The number is of the form xxx–xx–xxxx, where each x is a digit fro
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Question 907858: Social Security Numbers A Social Security number is used to identify each resident of the United States uniquely. The number is of the form xxx–xx–xxxx, where each x is a digit from 0 to 9.
(a)
How many Social Security numbers can be formed?
(b)
What is the probability of correctly guessing the Social Security number of the president of the United States? Answer by Fombitz(32388) (Show Source):
You can put this solution on YOUR website! a)Each place can hold one of 10 digits.
There are 9 places.
b) Well you know one SSN, yours, so you know it can't be that one. That improves your odds.
Still it's a pretty small number.
