Rules, 1958. The Rules prescribed quota for direct recruitment, educational qualifications, etc., but did not prescribe any criterion for selection. There were however Resolutions dated 24.7.2001 and 21.2.2002 which prescribed criteria for selection of candidates. According to prescribed criterion, there were 75 marks for written examination and 25 for interview. It was decided vide Resolutions dated 30.11.2004 that existing criterion would be followed but while holding written examination, 100 marks were prescribed instead of 75. The High Court made two changes on administrative side after written examination and interviews were over. First, marks for written examination were proportionately scaled down so as to maintain ratio between written examination and interview as 3:1 (75:25) instead of 4:1 (100:25). This was done because original criterion prescribed 75:25 ratio. Secondly, it introduced minimum qualifying marks for interview also. This resulted in reshuffling of selection list. The Apex Court considered the effect of these recruitments and concluded that the Resolutions dated 24.7.2001 and 21.2.2002 provided qualifying marks for written examinations only but not for interview. Considering the aforesaid facts and circumstances, the Apex Court has held that the introduction of requirement of minimum marks for interview, after the entire selection process (consisting of written examination and interview) was completed, would amount to changing the rules of