In a selection process for a cooking competition, participants must be either vegetarian or have experience in baking. Lisa is a vegetarian, Mark has experience in baking, and John is neither. Who qualifies for the competition?
In a group of five friends: Alice, Bob, Charlie, David, and Eva, Alice and Bob cannot be selected together. Charlie can only be selected if David is also selected. Eva can be selected only if Charlie is not selected. Which of the following combinations can be selected?
A committee of four members is to be formed from the following people: P, Q, R, S, and T. P and Q cannot be in the committee together. R must be included if S is included. T can be included only if R is included. Which of the following groups is a valid committee?
From the following items: A, B, C, D, and E, the selection criteria are: 1) A and B cannot be selected together. 2) C must be selected if D is selected. 3) E can only be selected if A is selected. Which of the following selections is valid?