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Find number abc

If bc17a - 6a575 = 255cb find number abc. Multiple solutions may exist.

Correct answers: 18

The first user who solved this task is Nasrin 24 T.

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Tourists

A group of American tourists was being guided through an ancient castle in Europe.

"This place," the guide told them, "is 600 years old. Not a stone in it has been touched, nothing altered, nothing replaced in all those years."

"Wow," said one woman dryly, "they must have the same landlord I have."

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Richard Zsigmondy

Born 1 Apr 1865; died 23 Sep 1929 at age 64.Richard Adolf Zsigmondy was an Austro-German chemist who was awarded who was awarded the Nobel Prize for Chemistry in 1925 for “his demonstration of the heterogenous nature of colloid solutions and for the methods he used, which have since become fundamental in modern colloid chemistry."” Colloids are composed of submicroscopic particles dispersed within another substance. To conduct his research on colloids he invented the ultramicroscope (1903), with which he could view particles with a diameter of one 10-millionth of a millimetre not visible in a conventional microscope. It used an intense beam of light oriented in a position perpendicular to the microscope's optical axis. As particles scattered the incident light, their movements could be seen as flashes against a dark background.«

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