\( \sqrt{3}\times\sqrt{21} \) किस प्रकार की संख्या है?
What type of number is \( \sqrt{3}\times\sqrt{21} \)?
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Correct Answer
B. अपरिमेय वास्तविक संख्याIrrational real number
Concept
\( \sqrt{3}\times\sqrt{21}=\sqrt{63}=3\sqrt{7} \). This is an irrational real number.
Why this answer is correct
The correct answer is B. अपरिमेय वास्तविक संख्या / Irrational real number. \( \sqrt{3}\times\sqrt{21}=\sqrt{63}=3\sqrt{7} \). This is an irrational real number.
Exam Tip
\( \sqrt{3}\times\sqrt{21}=\sqrt{63}=3\sqrt{7} \) है। यह अपरिमेय वास्तविक संख्या है।
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