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If 2 + 3 = 8, 3 + 7 = 27, 4 + 5 = 32, 5 + 8 = 60, 6 + 7 = 72, then, 7 + 8 = ?

First U.S. commercial gasoline engine

In 1872, George B. Brayton of Boston, Mass. (3 Oct 1830 - 17 Dec 1892) received a U.S. patent for a gas-powered engine (No. 125,166). He did pioneering work inventing this first American commercial internal combustion engine, which he manufactured and sold. Its principle of continuous ignition later became the basis for the turbine engine. A pressurized air-fuel mixture from a reservoir was ignited upon entering a water-cooled cylinder. The Brayton engine was tried in watercraft, one of John Holland's submarines and one for a few months installed in a carriage (1872-3). He held British patent Jul 1890, No. 11,062.«

A Neutron At A Bar

A neutron walks into a bar. "I'd like a beer" he says.
The bartender promptly serves up a beer.
"How much will that be?" asks the neutron.
"For you?" replies the bartender, "no charge"
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