Pinellas County is a county located in the state of Florida. As of the 2010 census, the population was 916,542. Its county seat is Clearwater, and its largest city is St. Petersburg. Pinellas County is included in the TampaâSt. PetersburgâClearwater, Florida Metropolitan Statistical Area.
Nowadays, we can say in plain English: A set is a well defined collection of objects. The elements or members of a set can be anything: numbers, characters, words, names, letters of the alphabet, even other sets, and so on.
A set in math is a group of items. It can be a group of numbers, variables, or anything else you can think of. When two or more groups have an item or items in common, the subset of items they have in common is what we call the intersection of sets.