In a family, P is the brother of Q, Q is the sister of R, and R is the father of S. How is P related to S?

A. UNCLE

A family consists of a mother, a father, and three children: P, Q, and R. P is the eldest and is studying medicine. Q is studying engineering and is younger than P but older than R. What is R's field of study?

C. UNKNOWN

A is married to B. They have two children, C and D. C is a doctor, and D is a teacher. If B is a lawyer, what is the profession of A?

D. UNKNOWN

A family consists of four members: A, B, C, and D. A is the mother of B. C is the father of B and D. D is the sister of B. What is the relationship between A and D?

B. MOTHER

In a family, M is the grandmother of N. N has two siblings, O and P. What is the relationship of O to M?

A. O IS M'S GRANDCHILD