Find number abc
[6711] Find number abc - If 2aac8 - 21b3a = b111 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 28 - The first user who solved this task is Nasrin 24 T
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Find number abc

If 2aac8 - 21b3a = b111 find number abc. Multiple solutions may exist.
Correct answers: 28
The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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The only cow in a small Kentuc...

The only cow in a small Kentucky town stopped giving milk. The peopledid some research and found that they could buy a cow just across the stateline in Illinois for $200.
They brought the cow from Illinois and the cow was wonderful. Itproduced lots of milk all of the time, and the people were very happy. They decided to acquire a bull to mate with the cow to produce morecows like it. They would never have to worry about their milk supply again.They bought the bull and put it in the pasture with their beloved cow.However, whenever the bull tried to mount the cow, the cow would move away. No matter what approach the bull tried, the cow would move awayfrom the bull and he could not succeed in his quest. The people were veryupset and decided to ask the Vet, who was very wise, what to do.
They told the Vet what was happening. "Whenever the bull tries to mountour cow, she moves away. If he approaches from the back, she moves forward. When he approaches her from the front, she backs off. Anattempt from the side, she walks away to the other side."
The Vet thought about this for a minute and asked, "Did you by chance,buy this cow in Illinois?"
The people were dumbfounded, since no one had ever mentioned where theybought the cow. "You are truly a wise Vet," they said. "How did youknow we got the cow in Illinois?"
The Vet replied with a distant look in his eye, "My wife is from Illinois."
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Earliest U.S. celestial photograph

In 1839, John William Draper took a daguerreotype of the moon, the first celestial photograph made in the U.S. He exposed the plate for 20 minutes using a 5-inch telescope and produced an image one inch in diameter. Draper was a professor of chemistry at New York University, New York City. His research in the effect of light upon chemicals had led him to take up photography. He also made his first satisfactory photographic portrait in 1839. A picture he took (1840) of his sister is the oldest surviving photographic portrait. Draper made important scientific contributions in fields of radiant energy, photochemistry, photography, and electric telegraphy. He also anticipated development of spectrum analysis.
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