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MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?

Correct answers: 150

The first user who solved this task is Miloš Mitić.

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A woman can always tell if

A woman can always tell if a man loves her by how much time he’s willing to invest. Money spent is meaningless, but time spent is priceless.

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Rita R. Colwell

Born 23 Nov 1934.(née Rita Rossi) American microbiologist and as the 11th director of the National Science Foundation (4 Aug 1998), the first woman - and the first biologist since the advent of modern biotechnology - to head the NSF. In the 1960s, she became the first U.S. scientist to create a computer program that analyzed data related to the taxonomic classification of different strains of bacteria. This led to her revolutionary discovery that the strain of cholera bacteria that had been linked to the disease belonged to the same species as benign strains of cholera. With her team of researchers she later found that both the harmless and the disease-causing (toxin-producing) strains were found commonly in estuaries and coastal waters.

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