Four friends, A, B, C, and D, have different pets: a dog, a cat, a bird, and a fish. A does not own a dog or a cat. B owns a bird. C does not own a fish. What pet does D own?
In a family of six members A, B, C, D, E, and F, there are two married couples. A is a teacher, B is a doctor, C is a lawyer, D is the wife of A, E is the husband of C, and F is a student. Who is the wife of B?
Five people are sitting in a row: P, Q, R, S, and T. R is sitting to the left of Q but not next to S. T is sitting at one of the ends. Who is sitting in the middle?