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Which is a winning combination of digits?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.

Correct answers: 51

The first user who solved this task is James Lillard.

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Vitamin C

In 1932, Professor C. Glen King of the University of Pittsburgh isolated vitamin C, a medical and scientific breakthrough, after five years of effort. By painstaking research extracting components from lemon juice - requiring untold thousands of lemons - King and his colleagues isolated a crystalline substance, identified, and later synthesized vitamin C. Their discovery meant prevention of the disease of scurvy, long a source of human suffering. During WW II, King was named chairman of the Nutrition Foundation, which funded research into the nutritional problems facing a country and an army at war. He continued his innovative work with vitamin C until his retirement from Columbia University in 1964.

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