Introduction
The RBI Grade B Exam is a highly competitive exam conducted by the Reserve Bank of India (RBI) to recruit candidates for the post of Grade B officers. The number of vacancies or seats available for each post in the RBI Grade B Exam varies every year and is subject to change based on the requirements of the RBI.

Official Notification
The official notification for the RBI Grade B Exam is released by the RBI on their official website. The notification provides detailed information about the exam, including the number of vacancies or seats available for each post. Candidates can refer to the official notification to get the most accurate and up-to-date information about the vacancies.

Breakup of Vacancies
The RBI Grade B Exam typically has vacancies for the following posts:
1. RBI Grade B Officer (General)
2. RBI Grade B Officer (DEPR) - Department of Economic and Policy Research
3. RBI Grade B Officer (DSIM) - Department of Statistics and Information Management

The number of vacancies for each post is usually provided separately in the official notification. The vacancies are further categorized based on different reservation categories such as General, OBC, SC, ST, EWS, etc. The exact number of vacancies for each category is mentioned in the notification.

Reservation Policy
The RBI follows the reservation policy of the Government of India while filling the vacancies for the RBI Grade B Exam. As per the policy, a certain percentage of vacancies are reserved for candidates belonging to different categories such as Scheduled Castes (SC), Scheduled Tribes (ST), Other Backward Classes (OBC), Economically Weaker Sections (EWS), etc.

Conclusion
The number of vacancies or seats available for each post in the RBI Grade B Exam is subject to change every year. Candidates are advised to refer to the official notification released by the RBI for the most accurate and up-to-date information about the vacancies. The official notification provides a detailed breakup of the vacancies for each post and category, ensuring transparency in the recruitment process.