Some semesters there are questions from previous exams that are not
directly relevant or not good practice for that semester's exam.

This term that is not the case for any of the previous problems on the
released exams.

As you work the old exams, though, do pay attention to the rules for
the exam in any given semester. Open-versus-closed book informs many
aspects of problem design.

F21:
  no exclusions

F22:
  no exclusions

F23:
  no exclusions

S21:
  no exclusions

S22:
  no exclusions

S23:
  no exclusions

S24:
  no exclusions