This book is the best book for all type of competitive exam such as SSC, IBPS, RBI, MBA, SBI PO, RAILWAY, IIFT etc and many other exam.Easy to hard-all type of maths are here and solved with easy shortcut method.This book contains lots of different chapters and short tricks.Also give clear concept.I also use this book and I get lots of benefit.This book give confidence and also increase ability.I suggest to all for any competitive exam.