+0  
 
0
42
2
avatar

Each Social Security number (SSN) in the USA consists of 9 digits in the format XXX-XX-XXXX. Due to federal restrictions, the first digit in each SSN cannot be a 0 or 1 and the middle two digits cannot be a 6. How many Social Security numbers are possible?

 Sep 8, 2020
 #1
avatar+26806 
+1

8 x 10 x 10 x 9 x 9 x 10 x 10 x 10 x 10 = ........

 Sep 8, 2020
 #2
avatar
0

 

and the middle two digits cannot be a 6   

 

That's interesting.  My SSN is xxx - 68 - xxxx  

.

 Sep 8, 2020

10 Online Users

avatar