International Journal of Neutrosophic Science IJNS 2690-6805 2692-6148 10.54216/IJNS https://www.americaspg.com/journals/show/615 2020 2020 Technical Faculty in Bor, University of Belgrade, Serbia admin admin Faculty of Applied Management, Economics and Finance, University Business Academy in Novi Sad, Belgrade Darjan .. Dept. Math and Sciences, University of New Mexico, Gallup, NM, USA Florentin Smarandache Faculty of Applied Management, Economics and Finance, University Business Academy in Novi Sad, Belgrade, Serbia Gabrijela Popovic   Multiple criteria decision making is one of the many areas where neutrosophic sets have been successfully applied to solve various problems so far. Compared to a fuzzy set, and similar sets, neutrosophic sets use more membership functions which makes them suitable for using complex evaluation criteria in multiple criteria decision making. On the other hand, the application of three membership functions makes evaluation somewhat more complex compared to evaluation using fuzzy sets. The reliability of the data used to solve a problem can have an impact on the selection of the appropriate solutionalternative. Therefore, this paper discusses an approach that can be used to assess the reliability of information collected by surveying respondents. The usability of the proposed approach is demonstrated in the numerical illustration of the supplier selection. 2020 2020 22 29 10.54216/IJNS.0110102 https://www.americaspg.com/articleinfo/21/show/615