Book recommendations for general knowledge and online quizzes:

Books for online quizzes: All the following books are highly recommended for online quizzes and general knowledge. #1 100 Math Brainteasers, Publisher:  Tom eMusic                                                Book type:  e-book ( Kindle Edition) Paperback:  No Language:  English Suitable for:   Various competitive exams,  Mathematical competitions or Math Olympiads, online quizzes #2 General Knowledge 2021,  Arihant Publications                                                 Topics:     Current Affairs, Histo…