Prospects for Applied Mathematics and Data Analysis PAMDA 2836-4449 10.54216/PAMDA https://www.americaspg.com/journals/show/2577 2022 2022 Foundation of Appurtenance and Inclusion Equations for Constructing the Operations of Neutrosophic Numbers Needed in Neutrosophic Statistics (revised) Emeritus Professor University of New Mexico Mathematics, Physics, and Natural Science Division 705 Gurley Ave., Gallup, NM 87301, USA Florentin Florentin We introduce for the first time the appurtenance equation and inclusion equation, which help in understanding the operations with neutrosophic numbers within the frame of neutrosophic statistics. The way of solving them resembles the equations whose coefficients are sets (not single numbers). 2023 2023 29 48 10.54216/PAMDA.030103 https://www.americaspg.com/articleinfo/34/show/2577