You have 30 friends that you want to invite to dinner. However, your dining room table only seats 6 people. Since you will take up one seat, you can...

You have 30 friends that you want to invite to dinner. However, your dining room table only seats 6 people. Since you will take up one seat, you can only have five friends at one time. You figure out that if you have a dinner party every Saturday night for 6 weeks, you can have everyone over. Now you have to decide how to form you Saturday night groups. How many different groups of guests can you have?