In a family, there are three siblings: X, Y, and Z. X is older than Y but younger than Z. Y is a painter, and Z is a doctor. What is X's profession if it is known that all siblings have different professions?
A family consists of a father, a mother, and three children: P, Q, and R. The father is a chef, the mother is a nurse, and P is the youngest child. If Q is a student and R is not a student, what is R's possible profession?
In a family, there are four members: M, N, O, and P. M is the grandmother of O, N is the father of O, and P is the sister of N. If O is a student, what is M's relationship to P?