Answer
[0 − 9]{3} - [0 − 9]{2} - [0 − 9]{4}
Work Step by Step
All United States social security numbers (which consist of three digits, a hyphen, two digits, another hyphen, and finally four more digits),
where the final four digits start with a 3 and end with a 6 will be as
--[0 − 9]{3} - [0 − 9]{2} - [0 − 9]{4}