A family consists of a mother, a father, and three children: P, Q, and R. P is the eldest child and is a doctor. Q is a teacher and is younger than P but older than R. What is R's profession if all children have different professions?
In a family, there are three children: X, Y, and Z. X is the oldest, Y is the youngest, and Z is the middle child. If X likes blue, Y likes red, and Z likes green, which child likes green?