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OpenStudy (2yoututu11):
Which of the following is an irrational number?
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OpenStudy (2yoututu11):
\[A. \sqrt{1}\]
OpenStudy (2yoututu11):
\[B. \sqrt{9}\]
OpenStudy (2yoututu11):
\[C.\sqrt{49}\]
OpenStudy (2yoututu11):
\[D.\sqrt{80}\]
OpenStudy (anonymous):
Do you have a calculator?
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OpenStudy (2yoututu11):
yes
OpenStudy (anonymous):
So just hit each number and the square root sign, see whether you get a integer or not.
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