I've had experiences where a big company hires lots of people for the same positions. For example I did customer support from a call center. There were almost 30 people in the training class and multiple floors of us doing the exact same thing.
In an interview, how do I inquire about this? I tried asking how many people are in the training class and they said around 3. I guess if they even have a "training class" it is implied that multiple people would be doing the same job.
What questions can I ask to better ascertain how many people would have the same job and responsibilities as me? In my experience I prefer to work in a place where different people have different specializations and have their own projects they are working on, as opposed to 50 people who are completely interchangeable. Of course the less replaceable your position is the less likely you are to get fired/laid off.