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Find number abc

If 5b64c - 2b64a = 2aaaa find number abc. Multiple solutions may exist.

Correct answers: 6

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A Jewish Mother After Hanukkah

A man received two sweaters for Hanukkah from his mother. The next time he visited her, he made sure to wear one of the two sweaters. As he entered her home, instead of the expected smile, she said, "What's the matter? You didn't like the other one?"

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Andre-Eugene Blondel

Born 28 Aug 1863; died 15 Nov 1938 at age 75.André-Eugène Blondel was a French physicist who invented (1893) the electromagnetic oscillograph, a device that allowed electrical researchers to observe the intensity of alternating currents. In 1894, he proposed the lumen and other new photometric units for use in photometry, based on the metre and the Violle candle. Endorsed in 1896 by the International Electrical Congress, his system is still in use with only minor modifications. Blondel was a pioneer in the high voltage long distance transport of electric power, and also contributed to developments in wireless telegraphy, acoustics, and mechanics. He proposed theories for induction motors and coupling of a.c. generators.«

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