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Find number abc

If a99bb - 18717 = 5118c find number abc. Multiple solutions may exist.

Correct answers: 30

The first user who solved this task is Nílton Corrêa de Sousa.

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Ellsworth Huntington

Born 16 Sep 1876; died 17 Oct 1947 at age 71. American geologist, climatologist, explorer and geographer who studied the origin, distribution, longevity, and accomplishments of civilization. He particularly wished to understand why progress varied from times when human creative energies flourished to periods when they seemed to fade. He attributed this to three causes: climate, the quality of people, and culture. Climatic circumstances resulted in migration, which could either facilitate or obstruct the advance of culture.

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