sir 15 dec 2010 i have puchase tata mcgra hill's g.s book for UPSE, in this book 2 pages and 2 qustion is wrong how can i mesure the other qustion is wrong or right. i would complaint to the custmer care of tata mcgra hill they said we will send u a new book but there is no responce from them yet plz help me i heartly thankfull to you