Science and Education Publishing American Journal of Numerical Analysis 2 1 2014 02 07 Transient and Numerical Solution of a Feedback Queueing System with Correlated Departures 20 28 EN Neelam Singla Department of Statistics, Punjabi University, Patiala, India P.C. Garg AJNA2014215 10.12691/ajna-2-1-5 2013 12 12 2014 01 10 2014 02 07 This paper studies a feedback queueing system with correlated departures. Departures take place only at transition marks. Inter-arrival times and inter-transition times follow exponential distributions. Transient-state queue length probabilities and laplace transform of the generating function of transient-state queue length probabilities are obtained. A few special cases of interest are also derived. Various probabilities relating the model are obtained numerically and are compared graphically.