The following changes have been made in the revised version of the Olympiad brochure:
- For regions which have less than 300 students appearing for PRMO, a new clause has been added specifying that the maximum number qualifying for RMO will be up to 50.
- It is been clarified that INMO 2018 merit certificate holders are not eligible to write PRMO/RMO. They may appear directly for INMO 2019.
- Sikkim is notified as a separate region.
- Details of coordinator for the Rajasthan region have been added.
- Lakshadweep has been included in Kerala region. Andaman and Nicobar have been included in Tamil Nadu region.