Hii,

yes, RS Aggarwal NTSE book is enough to prepare for NTSE MAT. It covers each and every topic related to NTSE level questions and MAT section is very well explained. It also contains previous year question papers with solution. Practise set papers also given in the book to help students while practising. So its enough to use RS Aggarwal to get an insight of topics. But you should also refer other books for practice to get high marks and crack the exam. Go through, Best Books for NTSE .

All the best!!!

Yes, of course rs Agrawal is the best book for NTSE exam as it offers a lot of different type of questions which will help you to practice more and more questions and all the questionnaire are of different variety.But if you want to score better atleast you should refer more than one book.