In a group of five friends: Alice, Bob, Charlie, David, and Eva, the following conditions apply: Alice is not friends with Bob. Charlie is friends with both Alice and Eva. David is friends with Bob but not with Eva. Who can be selected if we want to choose friends of Alice only?
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?
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 selected. 3) T can be included only if P is not selected. Which of the following combinations is valid?
Among five animals: Lion, Tiger, Bear, Wolf, and Fox, the following conditions are given: The Lion is heavier than the Tiger but lighter than the Bear. The Wolf is lighter than the Fox but heavier than the Tiger. Which animal is the heaviest?