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NesNes
NesNes

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"Not a number is a number."

In mathematics, zero divided by zero is undefined and is therefore represented by NaN in computing systems. The square root of a negative number is not a real number, and is therefore also represented by NaN in compliant computing systems. NaNs may also be used to represent missing values in computations.

Source: https://en.wikipedia.org/wiki/NaN

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