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Find number abc

If 276a3 + c07ab = 6bca1 find number abc. Multiple solutions may exist.

Correct answers: 22

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

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World Book and Copyright Day Joke

April 23rd is World Book and Copyright Day! Find a joke about it!

A man walks into a library and asks the librarian, "Do you have any books on how to create suspense?"
The librarian pauses for a moment, then says, "Yes, but I'm not going to tell you where they are!"

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Edward Bausch

Born 26 Sep 1854; died 30 Jul 1944 at age 89.American inventor who developed microscopes and optical instruments. In business, he became chairman Bausch & Lomb Optical Co. His father, John J. Bausch (1830-1926), was born in Germany, emigrated to America in 1849, and started a spectacle making business (the Vulcanite Optical Instrument Co.) with German immigrant Henry Lomb (1828-1908). By 1866, their company was making a simple microscope. The company name was changed to Bausch & Lomb Optical Co. in 1874, the year they produced their first compound microscope. Edward, with brothers William, and Henry all helped in the design and production of a full product line of microscopes. Edward held a number of patents related to the design of microscopes.

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