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Recreation with Numbers and Figures By Rajnish Kumar
eBook (PDF): $2.50
This book is a collection of several stories, sequences, problems, numbers and figures which can capture the imagination of the common reader. It has been written to recreate with no injections of... More > great heavy stuff and knowledge. Most of the mothers had a tough time explaining to their child that 11 is eleven and not oneteen and 12 is twelve and not twoteen. The early learner would have often wondered why of all bases this strange number 2.718… was chosen as natural logarithm base called, e. Why is Mathematics left out of the Nobel Prize by the Academy? Did you know that only a few folds to a paper could take you to the moon? Binary system is okay but why the computer uses such a strange notation as AD45F3? All this and many more interesting stories will be found in the book. It is not for serious mathematicians, not for people who know too much and find the book no more than a carbon copy of their own reproductions. The book should be read with a rough page and pencil, that’s the only way to enjoy it.< Less
Short Stories about Numbers By Rajnish Kumar
eBook (PDF): $4.00
This book has attempted to provide a set of off beat, fun filled pages. Most of the mothers had a tough time explaining to their child that 11 is eleven and not oneteen and 12 is twelve and not... More > twoteen. The early learner would have often wondered why of all bases this strange number 2.718… was chosen as natural logarithm base called,e. After all why is Mathematics left out of the Nobel Prize by the Academy? Did you know that only a few folds to a paper could take you to the moon? Binary system is okay but why the computer uses such a strange notation as AD45F3? A few brilliant logical and dissection puzzling stories with solutions are to be found here. There does exist a triangle in the universe whose angles add upto more than 180 deg.What made 1729 the taxi number so famous? Some strange path can make a square tyred bicycle move smoothly. All this and more interesting stories are to be found in the book.< Less
High Speed Calculations - A Guide to GRE, GMAT, SAT candidates By Rajnish Kumar
eBook (PDF): $3.00
A book for all those engrossed in preparations for SAT, GRE, GMAT ,CAT and various other similar examinations. Are you "wasting TIME" in calculations? 90% of the time goes in this. Here is... More > a book which can significantly increase the speed by 50%. The reason for errors in calculating are two fold, lack of time and no definite way for verification of result. The problem is aggravated more when speed and accuracy are the essence, and even a slight error can fetch negative marks. This simply is overwhelming and remorse occurs in potential candidates. This book has been compiled after extensive study of various quick calculation techniques picked up from Prof Tratchenberg’s Book and Vedic Mathematics, and also from tidbits across a spectrum of books. It has been kept very simple and only the very relevant and “truly” QUICK techniques have been mentioned. The entire book is available as preview free of charge; a minimum download price has been kept for a little support to the author's future endeavors.< Less
Calculations at the Speed of Thought- A must for SAT,GRE,GMAT candidates By Rajnish Kumar
eBook (PDF): $3.00
Attention to all those engrossed in preparations for SAT,GRE,GMAT and various other similar examinations. Are you "wasting TIME" in calculations? 90% of the time goes in this. Here is a... More > book which can significantly increase the speed by 50%. The reason for errors in calculating are two fold, lack of time and no definite way for verification of result. The problem is aggravated more when speed and accuracy are the essence, and even a slight error can fetch negative marks. This simply is overwhelming and remorse occurs in potential candidates. This book has been compiled after extensive study of various quick calculation techniques picked up from Prof Tratchenberg’s Book and Vedic Mathematics, and also from tidbits across a spectrum of books. It has been kept very simple and only the very relevant and “truly” QUICK techniques have been mentioned. The entire book is available as preview free of charge, a minimum download price has been kept for a little support to the author's future endeavors.< Less

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