These are two questions in one.
Is it more appropriate and/or common in (UK) English to say "problems" or to say "exercises", when referring to kind of questions to be solved by students using Mathematics or similar?
I think "problem" is more appropriate, but I would like to know your point of view as native speakers.
Is it correct to say "problems class" or "problems session", or should I say "problem session"??
I would say the first one is acceptable and more appropriate, but I am not sure. The second one seems to be referring to a one-problem class (a class where we deal with just one single problem during all the session).
Looking forward to learning from you,