From a set of items: P, Q, R, S, and T, the following selection rules apply: 1) P cannot be selected if Q is selected. 2) R must be included if S is included. Which of the following selections is valid?
There are four animals: a dog, a cat, a bird, and a fish. The dog is a mammal, the cat is a mammal, the bird is not a mammal, and the fish is not a mammal. Which animal is not a mammal?
In a group of five friends: Alice, Bob, Charlie, David, and Eva, Alice is taller than Bob but shorter than Charlie. David is shorter than Eva but taller than Bob. Who is the tallest among them?
In a class, there are three types of students: A, B, and C. Type A students are good at mathematics, Type B students are good at science, and Type C students are good at literature. If John is a Type A student and Sarah is a Type B student, which of the following statements is true?