Most probable case study based premium questions

There are so many questions based on the syllabus of the ISTQB Certified Tester Advanced Level - Test Analyst Certification. I thought that I will just practice on a few. But how to choose those apt questions was a question. However, CTAL-TA simulated question bank online is an amazing choice for this. There are lot many questions but not that many that it becomes difficult to prepare – just the right number.