A family consists of a father, a mother, and three children: X, Y, and Z. X is the eldest child and is a student. Y is a musician and Z is a painter. If the mother is a doctor, what can be inferred about the father's profession?
A family consists of a father, a mother, and two children. The father is a lawyer, the mother is a nurse, and one child is a student while the other is a musician. Who is the musician?