Find number abc
[7269] Find number abc - If 8bbab - cb888 = 3aa21 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 3
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Find number abc

If 8bbab - cb888 = 3aa21 find number abc. Multiple solutions may exist.
Correct answers: 3
#brainteasers #math
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A President Visits an Elementary School

After delivering a speech at an elementary school, the president lets the kids ask a few questions. One little boy, Joe raises his hand and asks, “How come you invaded Iraq without the support of the United Nations?”
Just as the president begins to answer, the recess bell rings and he says they’ll continue afterward. 25 minutes later the kids come back to class.
“Where were we?” says the president. “Oh, yes… do you kids have any questions?”
Another boy raises his hand and says, “I have three questions: First, why did you invade Iraq without support from the U.N.? Second, why did the recess bell go off 30 minutes early? And third, where is my buddy Joe?”

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Alkali Works Act pollution control

In 1863, the Alkali Works Act was passed in Britain, effective 1 Jan 1864, to limit the extensive environmental damage caused by atmospheric pollution from industrial alkali works in the English counties of Lancashire and Cheshire. The Act successfully enforced “the more effectual condensation of muriatic acid gas” (hydrochloric acid, HCl). In the era before electrolysis, alkali was manufactured by reacting salt with sulphuric acid, which produced HCl gas as an unwanted byproduct, released from tall chimneys intended to disperse the noxious vapours by dilution over a wide area. So this severely damaged the vegetation in a wide area. Buildings and iron structures were corroded. In the 1840s in the Merseyside area alone, an estimated 60,000 tons of the pollutant was released. The Act required a 95% reduction.«
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