Replace the question mark with a number
[3629] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 82 - The first user who solved this task is Fazil Hashim
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 82
The first user who solved this task is Fazil Hashim.
#brainteasers #math #riddles
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I haven't been this excited about Friday ...

I haven't been this excited about Friday

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Ejnar Hertzsprung

Born 8 Oct 1873; died 21 Oct 1967 at age 94. Danish astronomer who classified types of stars by relating their surface temperature (or colour) to their absolute brightness. A few years later Henry Russell illustrated this relationship graphically in what is now known as the Hertzsprung-Russell diagram, which has become fundamental to the study of stellar evolution. In 1913 he established the luminosity scale of Cepheid variable stars.
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