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What number comes next?

Look at the series (5391, 8427, 3176, 5351), determine the pattern, and find the value of the next number!

Correct answers: 113

The first user who solved this task is Sanja Šabović.

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Dr. Bill

Patient to his doctor: "I have forgotten so many things lately, and it’s getting worse. What can I do?"
Doctor: "Yes, this is a known illness, unfortunately it has no cure. On that note, I'd like to remind you about the $800 that you owe me."

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Karl August Möbius

Born 7 Feb 1825; died 26 Apr 1908 at age 83.German zoologist whose work in marine biology included the formation of pearls and the anatomy of the whale. He introduced the ecosystem concept of the "life community" ("Biocönose" - life having something in common) which featured in his 1877 study of oyster culture - the order, structure and function of the oyster reef as it relates to the abiotic habitat of a river mouth and the biotic associations of plants, plankton, benthic communities and fisheries in an estuary. He cofounded the Hamburg zoo and aquarium, led expeditions in the tropics, and became director of the natural history museum in Berlin (1887-1905).«[Image: oyster reef]

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