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Calculate the number 439

NUMBERMANIA: Calculate the number 439 using numbers [8, 5, 7, 6, 52, 206] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 23

The first user who solved this task is Djordje Timotijevic.

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Elman Rogers Service

Born 18 May 1915; died 14 Nov 1996 at age 81.American anthropological theorist and formulator of the nomenclature now in standard use to categorize primitive societies as bands, tribes, chiefdoms, and states. Although widely accepted, the system was abandoned by Service himself because his subsequent research made him question the accuracy of the terminology. Service did fieldwork among the Havasupai of the Grand Canyon and in Paraguay and Mexico. His principal theoretical interests were in kinship, cultural evolution, theories of culture and the evolution of political institutions. His principal ethnographic contribution was Tobati: Paraguayan Town (1954), written with his wife Helen.[Image: Havasupai Cliff Dwelling]

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