Hello Yogesh,

You may read these books:

1. Linear Algebra by S Kumaresan then Rao & Bhimasankaram

2. Introduction to Real Analysis by Bartle & Sherbert & then Rudin

3. An Introduction to Probability & Statistics by Rohatgi & Saleh/ Mood, Graybill, Boss.

4. A First Course in Probability by Chandra & Chatterjee & SOLVE Problems from feller.

5. Statistical Inference by Casella & Berger (Best One)

6. Statistical Inference Testing of Hypothesis by Srivastava & Srivastava

7. Design of Experiments by Montgomery

8. Theory & Methods of Survey Sampling by Mukhopadhyay.

The exam will have two parts -

• A multiple choice test in Mathematics at the undergraduate level
• A descriptive test having the following -

Group A: Test for all candidates in Mathematics at the undergraduate level and in logical reasoning.

Group B: Test that will be divided into five sections having equal marks, in Mathematics, Statistics, and Physics at the postgraduate level and in Computer Science, Engineering and Technology at the B.Tech level. Candidates need to answer questions from any one of these sections.

For more exam related details please visit the following link -

https://engineering.careers360.com/articles/isi-exam-pattern-syllabus

Hope this helps.