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Find number abc

If 743aa + 89cb1 = 1b3883 find number abc. Multiple solutions may exist.

Correct answers: 83

The first user who solved this task is Manguexa Wagle.

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Economists In Parades

There is also a joke about the last Mayday parade in the Soviet Union.
After the tanks and the troops and the planes and the missiles rolled by there came ten men dressed in black.
"Are they Spies?" Asked Gorby?
"They are economists," replies the KGB director, "imagine the havoc they will wreak when we set them loose on the Americans"

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Nicolaus Steno

Died 25 Nov 1686 at age 48 (born 10 Jan 1638). (a.k.a. Niels Steensen, or Stensen), who first and made unprecedented discoveries in anatomy, then established some of the most important principles of modern geology. During medical studies in Amsterdam he discovered “Stensen's duct” providing saliva from the parotid gland to the mouth. He was Danish royal anatomist for 2 years. Interested by the characteristics and origins of minerals, rocks, and fossils, he published in Prodromus (1669) the law of superposition (if a series of sedimentary rocks has not been overturned, upper layers are younger and lower layers are older) and the law of original horizontality (although strata may be found dipping steeply, they were initially deposited nearly horizontal.)[DSB gives date of death 25 Nov/5 Dec 1686 (O.S./N.S.). EB gives 26 Nov 1686.]

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