# Probability of Compound events

*label*Mathematics

*timer*Asked: May 21st, 2015

**Question description**

Every U.S. citizen has a nine-digit Social Security number.The first three digits are a geographic code, the next two digits are determined by the year and the state where the number is issued,and the last four digits are random numbers.If you are less than 100 years old, what is the probability that the last two numbers are your age?