Four friends, Emma, Noah, Olivia, and Liam, are ranked based on their scores in a quiz. Emma scored more than Noah but less than Olivia. Liam scored the least. What is the correct order of their scores from highest to lowest?
A committee of four members is to be formed from the following candidates: P, Q, R, S, and T. The selection criteria are: 1) P and Q cannot be selected together. 2) R must be included if S is included. 3) T can be included only if P is not included. Which of the following combinations is valid?
Five friends are sitting in a row. A is to the left of B but to the right of C. D is sitting at one of the ends. E is sitting to the right of A. Who is sitting in the middle?