Lucent's is the best book for government and other exam. This book has many lot of information. This book make the exam very easier for us. It's paragraph is in very simple type. This book has diagram which very simple. This book has also the level of civil services. It's information give us full response to clear our concept. It's concepts is very easy to study. An average student read this easily and then check any exam. This book has all subjects. And many lot of information of every subject found in it. It is clear that if we read this book, we success in our aim and future. This book is the best book.