i have to become a central bureau of investigation means?which subject i want to take? please guide my career

Thankyou for your question about CBI
The Central Bureau of Investigation (CBI) is the foremost investigative police agency in India, an elite force which plays a role in public life and ensuring the health of the national economy. It is under the jurisdiction of the Government of India.
Recruitment examination of sub-inspectors in CBI:
This examination called as Combined Graduate Level Examination is conducted by the Staff Selection Commission once in a year, normally during the month of February and notification for this examination is normally issued by the SSC through leading employment newspapers in the month of October of the previous year. Last date for submission of application forms for this examination is generally fixed during the first week of November.
Age and educational qualification requirement for applying the examination:
Candidates must be in the age group of 20 to 25 years as on the first of January of the year in which they are applying. However, upper age relaxation is applicable for reserved category candidates according to the rules of government of India. When it comes to educational qualification, candidates must be degree holders from a recognized university to apply for this examination.

Reference : http://cbi.nic.in/

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