In the sequence 12, 24, 36, 48, 60, how many times does the number 24 occur?

A. 1

In the sequence 100, 90, 80, 70, 60, how many times does the number 50 occur?

A. 0

In a family of five members A, B, C, D, and E, A is a doctor and is married to B. C is the sister of A and is a teacher. D is the father of E and is a lawyer. Who is the mother of E?

B. B

In a family, there are three children: X, Y, and Z. X is the eldest and is a musician. Y is a painter and is younger than X but older than Z. What is Z's profession?

C. UNKNOWN

A family consists of a father, a mother, and two children. The father is a banker, the mother is a nurse, and the son is a student. What is the profession of the daughter if it is known that she is not a student?

C. UNKNOWN