Replace the question mark with a number
[3058] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 378 - The first user who solved this task is Donya Sayah30
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 378
The first user who solved this task is Donya Sayah30.
#brainteasers #math #riddles
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Reading Is Fun

A mother walks into her own bedroom and is surprised to catch her 10 year old daughter reading her diary. Startled, she just stands there.
"You were right mom," says the daughter. "Reading is fun."

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Synthetic quinine

In 1944, the first synthetic quinine was produced by Dr. Robert Burns Woodward (on his birthday) and Dr. William von Eggers Doering at the Converse Memorial Laboratory, Harvard University, Cambridge, Mass. Quinine, an anti-malarial drug, is an organic chemical with the formula C20H24N2O2.
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