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Critical path method is widely used in project scheduling and controlling. The task of finding the crisp critical path has received researcher's attention over the past two decades. It has wide range of applications in planning and scheduling the large projects. The unknowns and vagueness about the time duration for activities in network-planning have led to the development of fuzzy critical path. To express more uncertainty and people's hesitancy in daily life, hesitant fuzzy is a very usefuldoi:10.12732/ijpam.v101i4.1 fatcat:ksclap4wj5fi5bidip4qadn2pm