गुणोत्तर श्रेणी \(5,15,45,135,\ldots\) का \(a_8\div a_5\) क्या होगा?
What is \(a_8\div a_5\) for the geometric progression \(5,15,45,135,\ldots\)?
Explanation opens after your attempt
C. (27)
Concept
The position gap is (3) and (r=3), so the ratio is \(3^3=27\). In exams use \(\frac{a_m}{a_n}=r^{m-n}\).
Why this answer is correct
The correct answer is C. (27). The position gap is (3) and (r=3), so the ratio is \(3^3=27\). In exams use \(\frac{a_m}{a_n}=r^{m-n}\).
Exam Tip
पद-संख्या का अंतर (3) है और (r=3) इसलिए अनुपात \(3^3=27\) है। परीक्षा में \(\frac{a_m}{a_n}=r^{m-n}\) लगाएँ।
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