Can you replace the question mark with a number?
[6473] 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: 73 - The first user who solved this task is Nasrin 24 T
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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: 73
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #riddles
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Temperance

A preacher was completing a temperance sermon: with great expression he said, "If I had all the beer in the world, I'd take it and throw it into the river."

With even greater emphasis he said, "And if I had all the wine in the world, I'd take it and throw it into the river."

And then finally, he said, "And if I had all the whiskey in the world, I'd take it and throw it into the river." He sat down.

The song leader then stood very cautiously and announced with a smile, "For our closing song, let us sing Hymn # 365: "Shall We Gather at the River."

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Armand-Hippolyte-Louis Fizeau

Died 18 Sep 1896 at age 76 (born 23 Sep 1819). 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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