You can primarily use Source and Difficulty filters to narrow down you selection, given a certain Quant topic.
If you want only 50-100 questions per topic, OG questions should have enough quantity to meet you need. You can start with easier questions, and then work your way up to higher difficulty level, topic by topic.
If you'd like to have a bit more challenging questions, there are a few
GMAT Club Test questions that are freely available in the question bank.
okHedwig
Hi how should I filter the Question bank so that I can practise the relevant Questions or the best set of Questions (say best 50-100Q) out of the thousands of Questions per topic?
This is regarding the Quant Question bank. Can anyone help me out please. Since there are lots of Questions & so few time is left I want to practice the best Questions I can filter out. How to do it?