Section 28B(6) in The Rajasthan Administrative Service Rules, 1954
(6)Selection for promotion to all other higher posts or higher categories of posts in the State Service shall be made on the basis of merit and on the basis of seniority-cum-merit in the proportion of 50:50:Provided that if the Committee is satisfied that suitable persons are not available for selection by promotion strictly on the basis of merit in a particular year, selection by promotion on the basis of seniority-cum-merit may be made in the same manner as specified in these Rules.Explanation. - If in a Service, in any category of post, number of posts available for promotion is an odd number then for purpose of determining the vacancies for selection by promotion on the basis of seniority-cum-merit and merit in the proportion of 50:50, the following cyclic order shall be followed:The first vacancy by seniority-cum-merit;The subsequent vacancy by merit;The cycle to be repeated.
