A group of animals consists of a cat, a dog, a rabbit, and a turtle. The following conditions apply: The cat is faster than the rabbit but slower than the dog. The turtle is the slowest. Which animal is the fastest?
A committee of four members is to be formed from the following individuals: P, Q, R, S, and T. The selection criteria are: 1) P and Q cannot be on the committee together. 2) R must be included if S is included. 3) T can only be included if P is not included. Which of the following combinations is valid?