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Who solved a difficult math problem by mistaking it for homework? Detailed answer

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Who solved a difficult math problem by mistaking it for homework?

American mathematician George Dantzig, being a graduate student at the university, one day was late for class and took the equations written on the blackboard for homework. It seemed to him more complicated than usual, but after a few days he was able to complete it. It turned out that he solved two "unsolvable" problems in statistics that many scientists struggled with.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

What is Churchill angry at in his most famous photograph?

One of the most famous photographs of Churchill, depicting him sullen and angry, was taken in 1941 after his speech to the Canadian House of Commons. When Churchill was brought into the room, he told the photographer that he had two minutes and lit a cigar. At the request of the photographer to remove the cigar, the prime minister refused. Then the photographer approached Churchill under the pretext of measuring the level of light and pulled the cigar out of his mouth himself, and the Prime Minister's reaction to this impudence was just caught on camera. But then Churchill smiled and allowed another photograph to be taken, although this benevolent photograph is far less known.

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