In a linear arrangement, M is to the left of N, and O is to the right of N. If P is sitting at one end, who is sitting between M and O?

A. N

In a group of five friends: Alice, Bob, Charlie, David, and Eva, the following conditions are given: 1) Alice cannot sit next to Bob. 2) Charlie must sit next to David. 3) Eva cannot sit at either end. Which of the following arrangements satisfies all conditions?

B. EVA, CHARLIE, DAVID, ALICE, BOB

In a family, there are three siblings: X, Y, and Z. X is older than Y but younger than Z. If Z is a banker and Y is a teacher, what is X's profession if he is not a teacher or a banker?

B. DOCTOR

Five friends, P, Q, R, S, and T are sitting in a row. P is to the left of Q but not next to R. S is sitting next to T. Who is sitting in the middle?

D. S

Four friends, A, B, C, and D, are sitting in a row. A is to the left of B but to the right of C. D is not at either end. Who is sitting in the middle?

A. A