  Math Central - mathcentral.uregina.ca  Quandaries & Queries    Q & Q    Topic: social security   start over

5 items are filed under this topic.    Page1/1            Social security numbers 2007-02-27 From Tish:Social Security numbers are in the form ###-##-####, where each symbol represents a number 0-9, how many are possible with this format? Will we ever run out of Social Security numbers? (This is one question with two parts, I saw some examples but I am still confused because if there are 1 million possibilities then how have we been able to issue out numbers to over 280 US citizens?) (For the second part a yes or no answer is sufficient)Answered by Penny Nom.     A nine digit number 2006-03-06 From Ryan:What is the total number of possible combinations of a nine digit number (ie., social security number) including repeating numbers?Answered by Stephen La Rocque and Penny Nom.     Jack's social security number 2004-06-08 From A student:Jack's social security number contains each of the nonzero digits exactly once. By examining the digits from left to right, he also found that 1 divides the first digit evenly, 2 divides the sum of the first two digirs evenly, 3 divides the sum of the first three digits evenly, and so on, until 9 divides the sum of all the digits evenly. What is Jack's social security number?Answered by Penny Nom.     Social security numbers 2002-09-06 From Chris:How many different number combinations are there for the social security system? We know that there are only a certain ammount of combinations available and the current US population is at 281 million. The number system should include as many nine digit combinations as possible using the numbers 0-9 in multiple different spots.Answered by Penny Nom.     Social Security Numbers 1998-07-07 From Valerie Lucas:How many social security numbers are possible? the answer is 10^9 why isn't the answer 9^9?Answered by Harley Weston.      Page1/1    Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.    about math central :: site map :: links :: notre site français