Four friends, A, B, C, and D, are sitting in a row. A is to the left of B but to the right of C. D is sitting at one of the ends. What is the correct sequence from left to right?
In a family of six members P, Q, R, S, T, and U, there are two males and four females. P is a teacher, Q is a doctor, R is T's mother, S is U's sister, and T is a student. Who is the male member of the family?