MAT and NMAT are both entrance exams conducted for admission into management program in India. While there maybe some overlap in terms of the general aptitude & reasoning sections, it's important to note that they are conducted by different bodies and have different focuses.

MAT covers sections like language comprehension, Mathematical skills, data analysis and sufficiency, intelligence and critical reasoning, and India and Global environment.

NMAT on the other hand, focuses on language skills, Quantitative analysis and logical reasoning.

MAT is conducted in either paper based or computer based but, NMAT is only computer based.

MAT scores are accepted by wide range of management schools across India. While NMAT score are primarily used for admission into NMIMS, and some other institutions.

Given these differences, it's advisable to study separately for each exam.

NMAT is Conducted by GMAC(Graduate Management Admission Council) with three sections each consisting of 36 questions . AIMA(All India Management Association) conducts MAT, featuring 5 sections with 40 questions each. The main difference in syllabus between the two is that MAT includes a section named Indian and Global Environment) which primarily consists of GK questions (Static and Current Affairs). You don't need to prepare for both exams separately, but it is advisable to take MAT and NMAT mocks separately.