In a family, there are three generations: grandparents, parents, and children. If the grandparents have two children, and each child has two children, how many grandchildren are there?
In a class, there are three types of students: Athletes, Scholars, and Artists. If John is an Athlete, Sarah is a Scholar, and Mike is an Artist, which of the following statements is true?
In a race, there are four competitors: Alex, Brian, Charlie, and Derek. Alex finished before Brian but after Charlie. Derek finished last. Who finished first?