Find number abc
[7297] Find number abc - If cb8a8 + 41bc6 = aa6c4 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 3
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Find number abc

If cb8a8 + 41bc6 = aa6c4 find number abc. Multiple solutions may exist.
Correct answers: 3
#brainteasers #math
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The photographer for a nationa...

The photographer for a national magazine was assigned to get photos of an enormous forest fire. Smoke at the scene was too thick to get any good shots, so he frantically called his home office to hire a plane. 
"It will be waiting for you at the airport!" he was assured by his editor. 
As soon as he got to the small, rural airport, sure enough, a plane was warming up near the runway. He jumped in with his equipment and yelled, "Let's go! Let's go!" The pilot swung the plane into the wind and soon they were in the air. 
"Fly over the north side of the fire," said the photographer, "and make three or four low level passes." 
"Why?" asked the pilot. 
"Because I'm going to take pictures! I'm a photographer, and photographers take pictures!" said the photographer with great exasperation and impatience. 
After a long pause the pilot said, "You mean you're not the instructor?" 
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Liquifaction of oxygen

In 1879, the liquefaction of oxygen was announced by Raoul Pierre Pictet (1846-1929), a Swiss chemist and physicist, by sending a telegram to the French Academy: Oxygen liquefied today under 320-atm and 140 degrees of cold by combined use of sulfurous and carbonic acid. French physicist Louis Cailletet made a similar announcement two days later. Pictet's early interest was in ice-making machines. Later, he studied extremely low temperatures and the liquefaction of gases. Both Pictet and Cailletet used both cooling and compression to liquefy oxygen but they achieved this using different techniques. Pictet's method had an advantage in that produced the liquid gas in greater quantity and was easier to apply to other gases.[Image: part of a Pictet machine to cool down glycerine, which was pumped through a piping system in the first artificial skating track:]
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