Mathur, C.J. : This is an appeal directed against an order passed by the learned Single Judge dated 20th April, 2001 whereby the learned Single Judge has dismissed the writ petition filed by the appellants. The brief facts which are necessary for disposal of this appeal are that an advertisement was published by the Public Service Commission for recruitment of members of Judicial Service, by which applications were invited from Advocates having three years practice to their credit. The petitioners in this case were enrolled as Advocates in the role of Bar Council of West Bengal from time to time and they were also enrolled as trainees from various dates, particulars whereof will appear from the annexures to the writ petition. After completion of their training under Rules 15A to 15C of the Bar Council of India Training Rules, 1995, which required that an applicant for enrolment has to undergo a training of one year after he obtains law degree from a recognised University in India. In the said rule it was also mentioned that the period undergone in training would be deemed as period spent on practice and the period of training to be counted as period of practice. But, the sa