Five books are arranged on a shelf: A, B, C, D, and E. A is to the left of B but to the right of C. D is to the right of E. Which book is at the extreme right?
In a family of six members A, B, C, D, E, and F, there are two males and four females. A is a teacher, B is a doctor, C is a housewife, D is a student, E is a nurse, and F is a lawyer. Who is the male doctor?
Four friends, A, B, C, and D, have different pets: a dog, a cat, a bird, and a fish. A does not have a bird. B has a pet that is not a cat. C has a pet that is not a dog. D has a fish. Which pet does A have?
In a family of six members P, Q, R, S, T, and U, there are two males and four females. P is a teacher, R is the mother of S, and T is the father of U. Q is not a teacher. Who is the male member of the family?
In a race, five participants (P, Q, R, S, T) finished in different positions. P did not finish first or last. Q finished before R but after S. T finished last. Who finished first?