A lecture for BSc students in Innopolis University. The slides are here: https://github.com/yegor256/pmba (in LaTeX and PDF) Blog: https://www.yegor256.com/ Books: https://www.yegor256.com/books.html GitHub: https://github.com/yegor256 (don’t hesitate to follow in order to stay informed) Telegram channel with recent news and updates: https://t.me/yegor256news (subscribe to not miss a thing) Twitter with daily and weekly updates: https://twitter.com/yegor256 (follow me!) iTunes: https://podcasts.apple.com/us/podcast/yegor256-podcast/id1150826721 SoundCloud: https://soundcloud.com/yegor256 0:00 Introduction 0:53 Questions 5:46 Answer 1 17:40 Answer 2 30:26 Answer 3 39:38 Answer 4 44:28 Answer 5 48:25 Answer 6 1:01:01 Answer 7 1:08:18 Answer 8 1:18:20 Homework