Find number abc
[6822] Find number abc - If 1bc5b + aa5bc = b7796 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 23 - The first user who solved this task is Nasrin 24 T
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Find number abc

If 1bc5b + aa5bc = b7796 find number abc. Multiple solutions may exist.
Correct answers: 23
The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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Lost In A Balloon

Two hobbyists get into their balloon for an excursion. After a while, the wind unexpectedly picks up, and the balloon goes out of control. The two balloonists, with great effort, manage to keep the balloon stable, upright, and away from power lines. But they are lost. With more effort, they get the balloon near the ground. While floating over a country road, they see a man walking below. One of the balloonists calls down to him:
"We're lost! Can you tell us where we are?"
The man thinks for a while, looks down, looks up, looks down again, stares into space for a minute, and then cries out:
"You're in a balloon!"
The wind picks up, and the balloon floats off. After a moment, one balloonist says to the other:
"That man must be a manager."
"Why?"
"Three reasons. First, he took a long time to answer. Second, he was perfectly correct. Third, his answer was perfectly useless!"
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Armand-Hippolyte-Louis Fizeau

Born 23 Sep 1819; died 18 Sep 1896 at age 76. French physicist who was the first to measure the speed of light successfully without using astronomical calculations (1849). Fizeau sent a narrow beam of light between gear teeth on the edge of a rotating wheel. The beam then traveled to a mirror 8 km/5 mi away and returned to the wheel where, if the spin were fast enough, a tooth would block the light. Knowing this time from the rotational speed of the wheel, and the mirror's distance, Fizeau directly measured the speed of light. He also found that light travels faster in air than in water, which confirmed the wave theory of light, and that the motion of a star affects the position of the lines in its spectrum. With Jean Foucault, he proved the wave nature of the Sun's heat rays by showing their interference (1847).
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