यदि (k)वाँ कर्ण \(\sqrt{k}\) माना जाए, तो \(\sqrt{81}\) कौन-सा कर्ण होगा और उसका मान क्या होगा?
If the (k)-th hypotenuse is considered \(\sqrt{k}\), which hypotenuse is \(\sqrt{81}\), and what is its value?
Explanation opens after your attempt
B. (81)वाँ, (9)(81)-th, (9)
Concept
If the (k)-th hypotenuse is \(\sqrt{k}\), then \(\sqrt{81}\) is the (81)-th hypotenuse. Also, \(\sqrt{81}=9\).
Why this answer is correct
The correct answer is B. (81)वाँ, (9) / (81)-th, (9). If the (k)-th hypotenuse is \(\sqrt{k}\), then \(\sqrt{81}\) is the (81)-th hypotenuse. Also, \(\sqrt{81}=9\).
Exam Tip
यदि (k)वाँ कर्ण \(\sqrt{k}\) है, तो \(\sqrt{81}\) (81)वाँ कर्ण है। \(\sqrt{81}=9\) होता है।
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