Placement paper books are available easily, pick any book and with the intent to clear the interview preparation for the exam, you will easily crack the exam.
All those having queries must check Vivek's answers. He has given good links.
To read all the important information (eligibility criteria, exam pattern, syllabus, prep material, exam tips, etc.): CLICK HERE
To make your exam prep effective and fruitful, go to the links below:
• Prepare well with 3i INFOTECH Prep App for smart phones: CLICK HERE
• Previous year questions: CLICK HERE
• For free Mock tests: CLICK HERE
In order to crack any exam you prepare for that particular exam but in case of placement exam you need to be dynamic enough to solve any problem pitched towards you . So i would suggest you to practice considering there may be a change in the exam pattern. The best book that i found is by the author R.S.Aggarwal
THE BOOKS WHICH HELPED A LOT WHEN I WAS PREPARING FOR 3i Infotech PLACEMENT EXAM. I USED THESE BOOKS YOU CAN BUY THEM AND STUDY FROM THEM