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Find number abc

If 925ab - 117bc = a0ac9 find number abc. Multiple solutions may exist.

Correct answers: 2

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Kids Tough Question

Kids can sometimes ask the toughest questions.
Son: Father, Can I ask you a question?
Father: Ok ask.
Son: When a doctor doctors a doctor, does the doctor doing the doctoring doctor as the doctor being doctored wants to be doctored or does the doctor doing the doctoring doctor as he wants to doctor.
Father: !!!??????!!!

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Frank Alvord Perret

Born 2 Aug 1867; died 12 Jan 1943 at age 75.American engineer and inventor who later became apioneerfield volcanologist. Using his prior experience at Thomas Edison's labs, at age 20, Perret co-founded the Elektron Mfg Co. in Brooklyn, NY developing the motors, dynamos and electric controls that the company manufactured (and later, elevators). The first American electric elevator (1887) was probably powered by an Elektron motor. He began a second career in 1904 as a volcanologist, using his electrical knowledge to the measure their seismic activity. He became well known for his studies at Vesuvius (1906), Etna (1910), Stromboli and Kilauea (1911). From 1929, he lived at the foot of Mont Pelée, Martinique, where he founded a memorial volcanological museum.«

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