Can one take the same exact bus from one place and back?

Question

For example taking route 75 from Place A to Place B and then about a few hours later getting on route 75 to get back to Place A.

Answer 1

It depends on the bus schedule.

Answer 2

yes - all bus routes are in a somewhat circular motion. So if you enter at point at, and get off at point b, you can later enter at point b to return to point a.