In a group of five friends: A, B, C, D, and E, the following conditions are given: A is taller than B but shorter than C. D is shorter than E but taller than A. Who is the tallest among them?
There are six books: P, Q, R, S, T, and U. The following conditions apply: P is to the left of Q but to the right of R. S is to the right of T but to the left of U. Which book is in the middle position?
A, B, C, D, and E are five students. The following conditions are given: A is older than B but younger than C. D is younger than E but older than A. Who is the youngest student?