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What is obtained by rationalising the denominator of ( \frac{5}{\sqrt{7}} )?( \frac{5}{\sqrt{7}} ) का हर परिमेय करने पर क्या मिलेगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ( \frac{5\sqrt{7}}{7} )( \frac{5\sqrt{7}}{7} )
Multiplying numerator and denominator by ( \sqrt{7} ) gives ( \frac{5\sqrt{7}}{7} ). Rationalising the denominator is a common exam question.अंश और हर को ( \sqrt{7} ) से गुणा करने पर ( \frac{5\sqrt{7}}{7} ) मिलता है। हर को परिमेय करना परीक्षा में सामान्य प्रश्न है।
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