Volume 24 Number 2, 2021 Three Theorems on the Goldbach Conjecture, and the Intimate Prime-Pairs Yonghong Liu Pages 83-97 Download A Review of Vacation Queueing Models in Different Framework A.P.Panta, R.P.Ghimire, D.Panthi and S. R. Pant Pages 99-121 Download A New Range of Modified Gamma and Beta Functions Naresh Dudi Pages 123-133 Download Mean Closed Binding Number and Binding-degree of a Graph Medha Itagi Huilgol and Kiran S Pages 135-148 Download Expressing Price of Perishable Goods Using Trapezoidal Fuzzy Numbers: A Case Study of Price of Fish in Guwahati Mohibul Islam Bora and Hemanta K. Baruah Pages 149-158 Download Mathematical Modelling of Drug Abuse and it’s Effect in the Society Fikiri Lucas Matonya and Dmitry Kuznetsov Pages 159-176 Download
