Lucent’s General knowledge is a all in one general knowledge book in this it has given that History, Geography, Polity, Economics, static gk, general science.it is a very good book for competitive exams to prepare in a short time.In this book it has given superlatives in india as well as world superlatives separately so that it helps in learning in easy way. it is very good book that I read this book in two months for competitive exams like ssc and bank exams and I am clearly mentioning that most of the gk question coming from this book