3. In a pharmacy, there are 8 unrelated people standing in line to pick up their prescriptions.

Before the pharmacist gives the patients their prescription medications, following the pharmacy’s policy, she asks them the month and day of their birthdays. What is the probability that at least two of the last three of these 8 people have the same birthday?

Assume that the birth rates are constant throughout the year and that each year has 365 days.