India

Hi Siddharth,
Actuarial science is course that concentrates on the mathematical and statistical analysis of risk, and their applications to insurance and other business management problems. Any one above 18 years of age with proficiency in mathematics and statistics can take up the course and become an Actuary. The candidate must pass 10+2 or equivalent.
The course is globally recognized with mutual exemptions with a lot of other international actuarial institutes.
A good grasp of basic mathematical/statistical concepts could prove beneficial. However, in the long run, your hard work and dedication would count the most.
The work of an actuary involves a lot of number crunching and the nature of work is quite tedious, nevertheless it offers rewards in terms of intellectual challenge, status, job satisfaction and earnings. As their judgment is the basis of decision making for many business activities, their career paths often lead to upper management and executive positions.
Traditionally, actuaries were found only in the life-insurance sector. However, with the opening up of the economy they are wanted by general insurance, health insurance, reinsurance companies, pensions and employee benefits, investment consultancies, risk management, banks, stock exchanges, private and government agencies. This is one field where demand exceeds supply. Which only increases career prospects in this field.
Hope this information helps. Please feel free to revert.
Wish you luck.

Hi Abhishek,
Every institute has it's own course specific fee structure. In order to know the exact fee it would be always advisable to browse through the official website of the institute where you wish to apply.
Below is the eligibility criteria for NDA.
For Army wing of National Defence Academy :- 12th Class pass of the 10+2 pattern of School Education or equivalent examination conducted by a State Education Board or a University.
For Air Force and Naval Wings of National Defence Academy and for the 10+2 (Executive Branch) Course at the Naval Academy :- 12th Class pass of the 10+2 pattern of School Education or equivalent with Physics and Mathematics conducted by a State Education Board or a University.
Candidates who are appearing in the 12th Class under the 10+2 pattern of School Education or equivalent examination can also apply.
For admissions, one has to fill the application form. application form along with an Information Brochure containing general instructions for filling up the form, an acknowledgement card and an envelope for sending the application will be obtainable from the designated Head Post Offices/ Post Offices throughout the country on payment of a requisite amount. Blank application forms and other particulars are published by UPSC in leading newspapers and Employment News in the month of March and September.
Hope this helps.
Wish you luck.