The present book has been written to meet the requirements of students, who wish to seek admission through entrance examination to various M.C.A. Institutes like J.N.U., D.U., Roorkee, Jadavpur (W.B.), Pune, V.H.U., UPMCAT, BITS (Ranchi) and many other prestigious institutions/universities.The purpose of this book is to make the students aware of what they are expected to know and what type of questions there are to come across, while taking the examination.In order to facilitate the study of a number of topics in details, each has been explained thoroughly with an adequate number of objective questions. Solutions of these questions have been provided at the end of the respective chapters.There are certain chapters which students should take care of while going through. They are Permutation and Combination, Binomial Theorem and Probability. This book will help you in tackling the mathematics paper section of any examination with ease.