Below is the exam pattern of ISI

1- Group A Questions- MCQ questions in Mathematics at the undergraduate level and in logical reasoning.

2-Group B Questions (Candidates have to choose one section from the given five)- PCB (Short Answers) in Mathematics, Statistics, Physics,Computer Science

Engineering and Technology.Question on Mathematics, Statistics and Physics will be of the Post graduate level while questions for the Computer Science, Engineering and Technology will be at B.tech level.

Below are the reference books