Seven Sins, Seven Jokes, and Seven Riddles is a collection of the best phrases in the project management life. The riddles are taken from the book Math Puzzles for MBAs by Igor Kokcharov. The book features a collection of challenging math puzzles that people with masters of business administration degrees, project managers, and entrepreneurs encounter in real life. The book includes the following topics: Business (Scope), Money (Cost), Time (Scheduling), Risk, and People (Project Resources).