Replace the question mark with a number
[2820] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 355 - The first user who solved this task is Manguexa Wagle
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 355
The first user who solved this task is Manguexa Wagle.
#brainteasers #math #riddles
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Charles Fabry

Died 11 Dec 1945 at age 78 (born 11 Jun 1867).French physicist who specialized in optics, devising methods for the accurate measurement of interference effects. He worked with Alfred Pérot, during 1896-1906, on the design and uses of a device known as the Fabry-Pérot interferometer, specifically for high-resolution spectroscopy, composed of two thinly silvered glass plates placed in parallel, producing interference due to multiple reflections. In 1913, Fabry demonstrated that ozone is plentiful in the upper atmosphere and is responsible for filtering out ultraviolet radiation from the Sun, protecting life on the surface of Earth from most of its harmful effects.
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