Previous Year Questions (PYQs) are actual questions that were posed in earlier IB ACIO exams. They provide you with a sense of the type of questions asked, how difficult the paper is, and what subjects matter. Solving PYQs is one of the best preparations because it reveals to you the real exam trend. You might even see similar question types repeating. It also helps you plan your time more efficiently and identify your weak spots. Several toppers advise practicing PYQs on a regular basis in order to increase exam preparedness. PYQs make you more familiar with the actual exam setting.