To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
the collection is good to to judge your knowledge with the hige collectin of solved papaer with expert answers this is good to read and learn the answer good way to practise . all the question are good and gives an overall quality is good the paper quality is good and as per the latest syallabus .