Problem Statement
Seat Directly Opposite Dr. Rao at the Circular Conference Table Six researchers -- Dr. Rao, Dr. Sen, Dr. Iyer, Dr. Mehta, Dr. Khan, and Dr. Bose -- sit around a circular table facing the center. Dr. Rao sits immediately between Dr. Sen and Dr. Iyer. Dr. Mehta sits immediately between Dr. Khan and Dr. Bose. Dr. Sen sits directly opposite Dr. Khan. Who sits directly opposite Dr. Rao?