Given the premises: 'All blue items are round. All round items are stored in Locker A. A red item is in Locker A.' What definitive conclusion can you draw?

Five students graduated from a college, not all in the same year, after each studying for four years. If batchmates Jiten and Anwar entered between Ramesh and Prakash but were senior to Sam, while Ramesh had left the college before Jiten took admission, then it is certain that:

When chasing a suspect in a low-visibility environment, how can audio cues best help you locate them?