Which one of the following is a rational number?

1.	Which one of the following is a rational number?
A.	\[{{(\sqrt{2})}^{2}}\]
B.	\[2\sqrt{2}\]
C.	\[2+\sqrt{2}\]
D.	\[\frac{\sqrt{2}}{2}\]
Answer» B. \[2\sqrt{2}\]

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Which one of the following is a rational number?

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