A class consists of four students: John, Lisa, Mark, and Nina. The following conditions are given: 1) John is older than Lisa but younger than Mark. 2) Nina is the youngest. 3) Lisa is not the oldest. Who is the oldest student in the class?
In a competition, there are four participants: Alice, Bob, Carol, and Dave. The following conditions are provided: 1) Alice scored higher than Bob but lower than Carol. 2) Dave scored the lowest. 3) Bob did not score the highest. Who scored the highest in the competition?
In a group of five friends: A, B, C, D, and E, the following conditions apply: 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 four boxes labeled P, Q, R, and S. The following conditions apply: Box P contains more items than Box Q. Box R contains fewer items than Box S but more than Box P. Which box contains the least items?