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

4 items are filed under this topic.    Page1/1            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