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?
If A + B means A is the brother of B, A - B means A is the sister of B, and A × B means A is the father of B, what is the relationship of C if A + B × C?
Five books are arranged on a shelf. Book A is to the left of Book B but to the right of Book C. Book D is to the left of Book E. What is the sequence of the books from left to right?