A, B, C, D, and E are five students with the following grades: A is better than B but worse than C. D is better than E but worse than A. Who has the highest grade?
In a race, the following conditions apply: Runner A finished before Runner B but after Runner C. Runner D finished after Runner A but before Runner E. Who finished last?
Among six friends: P, Q, R, S, T, and U, the following conditions are given: P is older than Q but younger than R. S is older than T but younger than U. Who is the youngest?