Can you replace the question mark with a number?
[6366] Can you replace the question mark with a number? - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 128 - The first user who solved this task is Nílton Corrêa de Sousa
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Can you replace the question mark with a number?

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 128
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #riddles
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This Wife Is Too Jealous

There was once a wife so jealous that when her husband came home one night and she couldn't find hairs on his jackets she yelled at him, "Great, so now you're cheating on me with a bald woman!"
The next night, when she didn't smell any perfume, she yelled again by saying, "She's not only bald, but she's too cheap to buy any perfume!"
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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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