Trying to study for my exam, and I can't seem to understand one of the concepts. The question is: [quote]From a group of five men and four women, determine how many committees of five people can be formed with: (e) at least two men (f) at least three women[/quote] I can't seem to understand the concept of "at least" when it comes to combinations. It's a basic question, but knowing how to do this basic question will allow me to do the more complicated versions. Any help?