It is a must have if you really want a book that gives you details of each chapter. I was in awe when I just went through the book.. worth a have and must buy. A lot of hard work has bedn put into this book the details says it all.
Some printing error is there but overall good collection of problem But try to make it error free as student is buying solved because they don't know the method and solutions if such a reputed publisher do silly mistake and through it if student influenced then only publisher and company is responsible... So think about average and below average student And if bright students sw such mistake thn it affects goodwill of company