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A

Step-by-step explanation:

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A

Step-by-step explanation:

Real number is a value of a continuous quantity that can represent a distance along a line. The adjective real in this context was introduced in the 17th century by René Descartes, who distinguished between real and imaginary roots of polynomials. Example: 1.23939....

when you type in the answer A in calculator, you will get 3.464101615 as your final answer which is explain that answer A is a real number.
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