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Calculate axb

Look at the series (314, 412, a, 832, 848, b, 8480), determine the pattern, and calculate axb.

Correct answers: 34

The first user who solved this task is Sanja Šabović.

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A father and his daughter wher...

A father and his daughter where in a crowded elevator. Suddenly a woman near them turned around and slapped that father in the face then stormed off at the next stop.
His daughter said, "It's okay Dad, I didn't like her either. She stepped on my foot so I pinched her."

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Paul Bartsch

Born 14 Aug 1871; died 24 Apr 1960 at age 88. German-American zoologist who was an authority on molluscs, but had broad interests in natural history including plants and birds. He began his career as assistant curator of marine invertebrates at the US National Museum, Washington, DC., but then worked until retirement for the Smithsonian Institution (1896-1942). He represented that organisation on numerous zoological expeditions. In 1902, he initiated a systematic, scientific bird banding program (credited as the first in North America since John James Audubon) by banding 23 Black-crowned Night-herons at Washington, DC. During WW I, he invented a gas detector for the Chemical Warfare Service in 1918. Bartsch organized the first Boy Scout troop in Washington.«

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