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. UNKNOWN

In a family, there are three children: X, Y, and Z. X is the brother of Y, and Y is the sister of Z. How is Z related to X?

D. SIBLING

In a family, there are four members: P, Q, R, and S. P is the grandmother of R, Q is the mother of R, and S is the father of Q. What is the relationship of S to R?

A. GRANDFATHER

In a family, there are three siblings: X, Y, and Z. X is older than Y but younger than Z. If Z is a teacher, what can we infer about Y's age compared to X?

B. Y IS YOUNGER THAN X

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?

A. ENGINEER