Tata Consultancy Services Assistant System Engineer interview questions

It actually started after Interview :P I have cleared all rounds and selected as well at TCS but I regret for asking less package (for 8LPA) for which HR immediately agreed upon and before issuing Offer letter, I asked for more but HR denied and I accepted offer letter with notice period of one month. Meawhile, I got another offer form very mid level company (keep it name as ABC )with package less than TCS even (around 7LPA), but I decided to not join this comapny and thinking to send email to HR of ABC for this decision.