Koncepts Of Numbers is a book by Gajendra Kumar that aims to help students prepare for competitive exams like CAT, GMAT, and GRE. The book covers various topics related to number systems, number series, arithmetic operations, and Vedic mathematics. The book also provides worked examples, formula examples, and number identification techniques to enhance the understanding of the concepts.
The book is divided into seven chapters, each focusing on a different aspect of number concepts. The first chapter introduces the basics of number systems, such as natural numbers, integers, fractions, decimals, and rational and irrational numbers. The second chapter deals with number series, such as arithmetic progression, geometric progression, harmonic progression, and special series. The third chapter explains the arithmetic operations on numbers, such as addition, subtraction, multiplication, division, and exponentiation. The fourth chapter covers the properties of numbers, such as divisibility rules, factors, multiples, prime numbers, and HCF and LCM. The fifth chapter discusses the concepts of percentages, ratios, proportions, averages, and mixtures. The sixth chapter explores the applications of numbers in various areas, such as profit and loss, simple and compound interest, time and work, time and distance, and permutations and combinations. The seventh chapter introduces the Vedic mathematics techniques that can help in solving problems faster and easier.
The book is written in a simple and lucid language that makes it easy to follow. The book also contains a large number of practice questions at the end of each chapter to test the knowledge and skills of the readers. The book also provides detailed solutions to all the questions for reference. The book is suitable for anyone who wants to improve their numerical ability and logical reasoning skills.
The book has received positive reviews from the readers who have found it useful and helpful for their exam preparation. Some of the reviews are as follows:
\"Good for CAT. Had the Kindle version but lost access to that Kindle account. So bought the hard copy. Good for CAT exam. Helps in completing Number Theory in a day, the prerequisite being having some basic idea about Number Systems and the eagerness and excitement to learn about the world of numbers.\"[^2^]
\"This book is very good for those who want to learn number system from scratch. It covers all the topics in detail with examples and exercises. The Vedic mathematics part is also very interesting and useful. I recommend this book to anyone who wants to improve their quantitative aptitude skills.\"[^3^]
\"One of the best books on number concepts. It covers all the aspects of number systems, number series, arithmetic operations, and Vedic mathematics in a simple and lucid manner. The book also has a lot of practice questions with solutions that help in understanding the concepts better. A must-read for anyone who is preparing for competitive exams like CAT, GMAT, XAT, CMAT, IIFT, Bank PO etc.\"[^1^]
The book is available in both paperback and Kindle formats. The paperback edition costs Rs. 399 and the Kindle edition costs Rs. 249. The book can be ordered online from Amazon or Flipkart. The book is also available in PDF format for free download from various websites.
Koncepts Of Numbers by Gajendra Kumar is a comprehensive and concise book that covers all the essential topics related to number concepts. The book is ideal for anyone who wants to master the numerical ability and logical reasoning sections of various competitive exams. 0efd9a6b88