(i) out of the annual permitted strength in each branch of study or faculty, fifteen per cent. seats shall be reserved for the Scheduled Castes;
(ii) out of the annual permitted strength in each branch of study or faculty, seven and one-half per cent. seats shall be reserved for the Scheduled Tribes;
(iii) out of the annual permitted strength in each branch of study or faculty, twenty-seven per cent. seats shall be reserved for the Other Backward Classes.
(a) less than fifty per cent. of the annual permitted strength on the date immediately preceding the date of commencement of this Act, the total percentage of the seats required to be reserved for the Other Backward Classes under clause (iii) shall be restricted to the extent such sum of percentages specified under clauses (i) and (ii) falls short of fifty per cent. of the annual permitted strength;
(b) more than fifty per cent. of the annual permitted strength on the date immediately preceding the date of commencement of this Act, in that case no seat shall be reserved for the Other Backward Classes under clause (iii) but the extent of the reservation of seats for the Scheduled Castes and the Scheduled Tribes shall not be reduced in respect of Central Educational Institutions in the specified north-eastern region.]