RS Aggarwal its not a book I must say it is complete guidance for all of them who want to start preparing for competition exams, I m also preparing for ssc and ibps exams and I started my basic maths with this book and now I really learnt many topics easily, in the book examples is too good and given answer is to easy and can be understand easily, I would love to tell that many question asked in ssc and ibps examination is direct asked from this book this book is available both languages Hindi and English both are best.