I am looking for a book or website on mathematical theory of probability and statistics for preparation of an examination. The syllabus written in the unit 4 of this document. Only multiple choice questions are given to see if the candidate know the subject matter and eligibility of applying the knowledge. The matter is known to me. I want to revise the subject and want to increase my skills but do not want to read a long book.
Thank you for suggestion. If you have a soft copy please share a link.