there are many books on this subject in the market but in most of the books you will find the same very old essays and their way of writing almost same. Writers hesitate to write on new topics, some future topics which are the need of the hour. Being the teacher of english, teaching for the last two decades to graduate to post graduate level. I know what is required today. Keeping in mind the need of the hour I am compiling this book of cutting edge essays, in which you will find something for everyone, you may be college student, appearing in competitive exam, department or banking exam. etc.
This book is comprehensive guide on engineering drawing for mechanic diesel trade applicable for ITI courses and railway recruitment exams.
In issuing this volume of my mathematical puzzles, of which some have appeared in periodicals and others are given here for the first time, I must acknowledge the encouragement that I have received from many unknown correspondents, at home and abroad, who have expressed a desire to have the problems in a collected form, with some of the solutions given at greater length than is possible in magazines and newspapers. Though I have included a few old puzzles that have intrested the world for generations, where I felt that there was something new to be said about them, the problems are in the main original. It is true that some of these have that the reader may be glad to know their source.