Find number abc
[5024] Find number abc - If 7b5ba - c9906 = ab6a6 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 46 - The first user who solved this task is Djordje Timotijevic
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Find number abc

If 7b5ba - c9906 = ab6a6 find number abc. Multiple solutions may exist.
Correct answers: 46
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
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Skydiving

Ole was to learn skydiving. He was told that shortly after jumping out of the plane he was to pull the short rip cord and that will open a small parachute which will open the large chute and if by chance the large chute fails to open, he should pull the other cord which will open the large parachute. He was told that a car will be on the ground to take him back to the airport.

Ole jumps out of the plane and proceeds to pull the first cord. The small chute doesn't open so he pulls the last cord and the large parachute doesn't open either. Ole thinks to himself, "It will be just my luck that the car won't be there either"

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Dry-cell patent

In 1887, German scientist, Dr. Carl Gassner, was issued a U.S. patent (No. 373,064), the first in the U.S. for a “dry” cell. Gassner had already patented his invention in Germany (No. 37,758) on 8 Apr 1886, and also in Austria, Belgium, England, France and Hungary in the same year. The sealed zinc shell which contained all the chemicals was also the negative electrode. Later, he improved the shelf life of the battery by adding zinc chloride to the electrolyte to reduce corrosion of the zinc shell. Gassner's battery was much like the carbon-zinc, general-purpose batteries sold today. By 1896, the National Carbide Company (later Union Carbide and Eveready) produced the first consumer dry cell battery. Two years later, the company made the first D cell.«[Image: The six-inch, 1.5 volt Columbia Dry Cell marketed by NCC in 1896.]
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