This book is specially designed for those students who are looking for basic to advance knowledge in permutation, combination & probability (suitable for senior and higher secondary students). Book is very helpful for those who are preparing for the competitive exams like IIT-JEE Main & Advanced, MBA-CAT, Bank Entrance Exams, CBSE/ ICSE Boards Exams etc. This book has all the concepts and related 250+ solved examples followed by level wise designed questions. It has 300+ topic-wise subjective questions which covers NCERT, CBSE and other Board level exams. Further it contains 600+ objective MCQ topic-wise and mixed questions from basic to advanced levels which covers JEE Main, JEE Advanced and other competitive level questions. Table of contents UNIT-1 PERMUTATION AND COMBINATION 1. Introduction 2. Fundamental Principle of Counting 3. Permutation 4. Circular Permutation 5. Combination 6. Selection from Distinct and Identical Objects 7. Divisors of a Given Natural Number 8. Division of Distinct Objects into Groups 9. Division of Identical Objects into Groups 10.Arrangement in Groups 11.Method of Inclusion & Exclusion 12.Use of Multinomial 13.Use of Multinomial in Linear Equations 14.Exponent of Prime in n! 15.Problems on Formation of Numbers 16.Proficiency Tests 17.Solved Objective Examples 18.Solved Subjective Examples 19.Quick Formula Revision Chart 20.Topic-wise Daily Practice Problems 21.Selected Problems for JEE Main 22.Selected Problems for JEE Advanced UNIT-2 PROBABILITY THEORY 1. Introduction 2. Definition of various terms 3. Classical definition of probability 4. Some important remarks about coins, dice, playing cards 5. Problems based on combination and permutation 6. Odds in favor and against 7. Addition theorem on probability 8. Conditional probability 9. Total probability and Bayes’ rule 10. Binomial and probability distribution 11. Solved Objective Examples 12. Solved Subjective Examples 13. Quick Formula Revision Chart 14. Topic-wise Daily Practice Problems 15. Selected Problems for JEE Main 16. Selected Problems for JEE Advanced