Journal of Neutrosophic and Fuzzy Systems JNFS 2771-6449 2771-6430 10.54216/JNFS https://www.americaspg.com/journals/show/1613 2021 2021 Optimal Value of the Service Rate in the Unlimited Model M\M\1 Faculty of Informatics Engineering, Al-Sham Private University, Damascus, Syria Maissam Jdid Department of Mathematical and physical science, University of Nizwa, Oman Khalifa Alshaqsi Operations research is the applied side of mathematics, and since its inception it has helped to improve the performance of many systems that used its methods in its workflow, one of the methods of operations research is the theory of queues that have been used in many aspects of life, especially the aspects that are directly related to customer service, and the goal is to serve the customer as soon as possible and at the lowest cost, which prompted many researchers to provide   the  research and studies that can be applied in systems that have a queue.These studies showed good results, from these studies this research is  presented to find the optimal value of the service rate in the unlimited model  according to classical logic, we present in this research a study to find the relationship through which we get the optimal value of the service rate using neutrosophic logic and this study is an expansion of the study according to classical logic, through the two studies  The great benefit we get when using neutrosophic logic and neutrosophic values in operations research topics is demonstrated. 2023 2023 08 13 10.54216/JNFS.060101 https://www.americaspg.com/articleinfo/24/show/1613