A family has five members: A, B, C, D, and E. A is the grandmother of C, B is the father of C, D is the brother of C, and E is the mother of C. Who is the youngest member of the family?
A family consists of a father, a mother, and three children: P, Q, and R. P is the eldest and is studying engineering. Q is studying medicine, and R is the youngest. If the mother is a lawyer, what is the profession of the father?