Five people are sitting in a row: X, Y, Z, W, and V. Y is to the left of Z but to the right of W. V is at one of the ends. Who is sitting in the middle?
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?