Social Security numbers are of the form XYZ - MN - ABCD The three digts XYZ are referred to as the area number. The number associated with where you registered for your social security card. X and be any number the area code 666 has never been usedThe middle two referred to as the group number. The groups be number from 01 to 99 (cannot be The last 4 digits are the serial number. The serial number can be any to 9999 be )the security number 123-45-6789 used in advertisements. How many social security numbers are possible?