Find number abc
If 188a6 + cb3c4 = 8a2cb find number abc. Multiple solutions may exist.Correct answers: 2
#brainteasers #math
Typesetting machine patentIn 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.) |