Rajiv,
see, for Actuarial Science from Institute of Actuaries of India , you need to be a fully qualified CA or you should have a atlest 85+ marks in your 12th standard.
and apart from that, pass percentage of Actuaries exam in india is verry less in comparison to other countries, you can imagine from it ki today india have only 225 fully qualified actuaries.
this course needs a single minded devotion, and its verry difficult to carry it with a job, with job it can take 7 to 8 years to clear exams because as you know there are total 15 exams in this course..
I think, think its better to you to go for a PHD programmes, today ICAi have a MOU with most of the indian universities , who recognises CA as a masters programme for admission as a PDh student in their universities.
and morever, after 1 year of job you can also finance your CFA,usa programme, CFA from USA is a has a more worldwide recognition than Acturial Science.
I m telling this to you, because my many friends who are older than me by 2 or 3 years .... has start ups acturial science when they was in the age of 18, and till date their 1 or 2 CT seies exams are epnding...because in acturial sceince single minded devotion is require...and moreever you can go for CIMA examiations and for CS or CWA course..
SACHIN..