This book contains the following items :

1. Number Theory
2. Permutation and Combination
3. Polynomial
4. ISI B Stat B Math Admission test Objective Solution 2009-2016
5. Test of Mathematics at the 10+2 level subjective solution (127 questions)
6. Test of Mathematics at the 10+2 level Objective Solution (all)
7. 20 selected Number Theory problems' Solution from INMO
8. Selected ISI B Stat B Math year question solution (16 problems)
9. Some extra solution (34 problems)
10. Some More solution.
11. ISI B Stat B Math Short answer type question 2015, 2016, 2017, 2018 and 2019 added.
12. 47 completely new problems, solely created by me, with solution are added.

This book contains around 1500 solved problems.

Why the theory contains only three chapters Number Theory, Permutation and Combination and Polynomial? Because there are the only three critical chapters for the competitive exams. Questions are critical from these 3 chapters. And this chapters needs to be studied in depth and beyond available books. Rest you can find in any market available books. This book contains something which you won't be able to find in any market available books. Lots of tips and tricks to solve problems and followed by proofs and examples to make student understand how to apply them. This is a book you must consult after going through a text book. This is a must have book for competitive exam aspirants.

More book :
1. https://pothi.com/pothi/book/ebook-shubhankar-paul-solved-problems