Most books available in the market for NATA or JEE Paper 2 have excessive syllabus. You would end up putting in efforts in topics not included in the syllabus.
The portions of NATA & JEE paper 2 Mathematics are basically your 11th & 12th class subjects. For the detailed syllabus, you can refer to the following resources
NATA Brochure (https://online.cbexams.com/nata/images/NATA2019Brochure.pdf?v1) or the
JEE Information bulletin (https://jeemain.nic.in/WebInfo/Handler/FileHandler.ashx?i=File&ii=14&iii=Y)
That should be sufficient for you to get an idea what comes in the exam
All of these topics are covered in DQ Edge and updated on a daily basis so you would not need to refer to any books.
The UCEED content DQ Edge has all and more you would require. You do not need any book.
The advantages of DQ Edge over any book are -
No you will not get marks.
they will not consider because they correct according to the marking and you sheet will be considered as in valid
The cut off score for NID M.Des (Product Design) prelims varies every year. It depends on the number of students taking the test, difficulty level of the exam and the reservation quota applicable to the students. Hence, the score cannot be predicted each year.
However, from past performance of students, a score of 70+ will be a safe score to target.