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Find number abc

If 92cac + 82a0b = 17c7a9 find number abc. Multiple solutions may exist.

Correct answers: 43

The first user who solved this task is Djordje Timotijevic.

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Send my luggage

Passenger to Airline Ticket Agent: I want my brown suitcase sent to Los Angeles, my green suitcase sent to Kansas City, and my tan suitcase sent to New Orleans.

Ticket Agent: I'm sorry, sir; this flight is to Nashville. We can't do that.

Passenger: Why not ? You did it last time.

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Typesetting machine patent

In 1884, the first U.S. patent for the Linotype typesetting machine was issued to Ottmar Mergenthaler of Baltimore, Maryland. His patent No. 304,272 was for a “matrix making machine.” It was first used commercially on 3 Jul 1886. (An earlier U.S. design of typesetting machine that actually operated received a patent on 15 Sep 1857, though the machine invented by Timothy Alden of New York City was designed to pick up type from cells in a horizonatal rotating wheel, and drop it into a line for composition. The first U.S. patent for a typesetting machine was issued even earlier, to Adrien Delcambre and James Haddon Young of Lisle, France, on 22 Jun 1841, for a machine with piano-style keys to operate push-type levers that released type to fall by gravity.)

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