Would least likely have a monetary system?

A society that would least likely have a monetary system is one that operates primarily on a barter system, where goods and services are exchanged directly without the use of money. This is often seen in small, close-knit communities where trust and personal relationships facilitate trade. Additionally, societies with limited economic complexity or those that prioritize subsistence living may not develop a formal monetary system, relying instead on communal sharing and reciprocity.