is probability, permutation, combination, std. deviation common in the gre. Like in the old gre those were not so important. What about the new gre.
These questions can and do come up. I would be familiar with those topics. I would utilize the Quant Mountain or Quant Flashcards, as well as the videos in the study plans to review them. I do not believe these should be your main focus for studying if you have a lot of material to cover in a short time. However, I would be familiar with them and practice them.
They came up in the old GRE. There has been no content change in quant from the old to current GRE