In a family, there are three siblings: X, Y, and Z. X is a teacher, Y is a lawyer, and Z is the youngest sibling. If Z wants to become a doctor, which sibling is the oldest?
In a class, there are three types of students: Art students, Science students, and Commerce students. If all Art students are creative, and some Science students are not creative, which of the following statements is true?
In a group of five friends: A, B, C, D, and E, A is taller than B but shorter than C. D is shorter than E but taller than A. Who is the tallest among them?