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Find number abc

If a1cab - bb195 = c292 find number abc. Multiple solutions may exist.

Correct answers: 5

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Sign on company bulleting boar...

Sign on company bulleting board: “This firm requires no physical-fitness program. Everyone gets enough exercise jumping to conclusions, flying of the handle, running down the boss, flogging dead horses, knifing friend in the back, dodging responsibility, and pushing their luck.”

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Berliner helicopter flight

In 1908, Emile Berliner (who invented the gramophone in 1887) in a trial of his first "test-rig" helicopter design, found it could potentially lift double its weight. While the Wright brothers were working on powered manned flight, by 1903, Berliner tested a 7-ft model rocket-powered airplane, which flew 40-ft before tumbling to ground. He began, in 1907, designing his helicopter with tandem intermeshing rotors. Although the Wrights by then had a successful rigid-wing aircraft, Berliner recognised the versatility of a helicopter. The 36-hp rotary engine he developed with the Adams-Farwell Company was the first application in aviation of the rotary engine, and had a weight advantage. He founded the Gyro Motor Company to promote rotary engines in aviation.«

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