Five friends P, Q, R, S, and T are sitting in a row. R is sitting between Q and S. T is sitting at one of the ends. Who is sitting to the immediate left of R?
Four friends, A, B, C, and D, have different pets: a dog, a cat, a bird, and a fish. A does not own the dog or the cat. B owns the bird. C does not own the fish. Which pet does D own?