In a family, there are three siblings: X, Y, and Z. X is older than Y but younger than Z. If Z is a doctor and Y is a teacher, what is X's profession if he is neither a doctor nor a teacher?
Four friends - Alex, Brian, Charlie, and David - have different favorite colors: Red, Blue, Green, and Yellow. Alex does not like Blue or Green. Brian's favorite color is not Red. Charlie likes Green. What is David's favorite color?
In a family of five members - P, Q, R, S, and T - there are two males and three females. P is a teacher, Q is a doctor, and R is the mother of S. T is not a male. Who is the father?
Five books are arranged on a shelf. Book A is to the left of Book B, Book C is to the right of Book D, and Book E is to the left of Book A. What is the correct order of the books from left to right?