\( \sqrt{\frac{81}{121}}-\sqrt{\frac{4}{49}} \) का मान क्या है?
What is the value of \( \sqrt{\frac{81}{121}}-\sqrt{\frac{4}{49}} \)?
Explanation opens after your attempt
Correct Answer
B. \( \frac{41}{77} \)
Concept
\( \sqrt{\frac{81}{121}}=\frac{9}{11} \) and \( \sqrt{\frac{4}{49}}=\frac{2}{7} \). The difference is \( \frac{63}{77}-\frac{22}{77}=\frac{41}{77} \).
Why this answer is correct
The correct answer is B. \( \frac{41}{77} \). \( \sqrt{\frac{81}{121}}=\frac{9}{11} \) and \( \sqrt{\frac{4}{49}}=\frac{2}{7} \). The difference is \( \frac{63}{77}-\frac{22}{77}=\frac{41}{77} \).
Exam Tip
\( \sqrt{\frac{81}{121}}=\frac{9}{11} \) और \( \sqrt{\frac{4}{49}}=\frac{2}{7} \) है। अंतर \( \frac{63}{77}-\frac{22}{77}=\frac{41}{77} \) है।
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