Which number is missing?
[2] Which number is missing? - Which number is missing? - #brainteasers #math #riddles - Correct Answers: 220 - The first user who solved this task is Eric Newton
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Which number is missing?

Which number is missing?
Correct answers: 220
The first user who solved this task is Eric Newton.
#brainteasers #math #riddles
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Blonde Restroom Attendant

Q: Why did the blonde quit her job as a restroom attendant?
A: She couldn't figure out how to refill the hand dryer!
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First series of photographs of solar eclipse

In 1860, a series of photographs of a total solar eclipse was made by Warren De la Rue (1815-1889) in Spain, and by Father Angelo Secchi at another location 500-km away. The value of photography as a means of investigating the solar appendages was demonstrated when the images were compared at various stages of the eclipse. The moon was clearly seen to advance over the “red protuberances” and settle forever that they belonged to the sun and and not the moon.
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