83

The Number 7 Is Considered the Most Popular Lucky Number Worldwide

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The Infinity Symbol Has an Official Name

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The Infinity Symbol Has an Official Name

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There Are More Possible Chess Games Than Atoms in the Observable Universe

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The Fibonacci Sequence Appears in Rabbit Populations

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A Googol Is a 1 Followed by 100 Zeros

65

The Number 7 Is Considered the Most Popular Lucky Number Worldwide