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The set of real numbers are a subset of the set of complex numbers: imagine the complex plane with real numbers existing on the horizontal number line, and pure imaginary existing on the vertical axis. The entire plane (which includes both axes) is the set of complex numbers. So any real number (such as pi) will also be a complex number. But many people think of complex numbers as something that is "not a real number".

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9y ago

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Yes. Subset real number, subset irrational number.

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9y ago
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Pi is a real number. All real numbers are complex numbers (complex numbers in which the imaginary part is zero).

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9y ago
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No it is not.

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9y ago
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Q: Is pi a complex number
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