गुणोत्तर श्रेणी \(4,12,36,108,\ldots\) का \(a_9\div a_5\) क्या होगा?

What is \(a_9\div a_5\) for the geometric progression \(4,12,36,108,\ldots\)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

B. (81)

Step 1

Concept

The position gap is (4) and (r=3), so the ratio is \(3^4=81\). In exams, use \(\frac{a_m}{a_n}=r^{m-n}\).

Step 2

Why this answer is correct

The correct answer is B. (81). The position gap is (4) and (r=3), so the ratio is \(3^4=81\). In exams, use \(\frac{a_m}{a_n}=r^{m-n}\).

Step 3

Exam Tip

पद-संख्या का अंतर (4) है और (r=3), इसलिए अनुपात \(3^4=81\) है। परीक्षा में \(\frac{a_m}{a_n}=r^{m-n}\) लगाएँ।

Question me issue ya doubt hai?

Answer, explanation, typing mistake ya suggestion directly hamari team ko bhejein. 📱Helpline (Call / WhatsApp): +91 7272824365

Related Mathematics Questions

FAQs

Mathematics Answer, Explanation and Revision Hints

गुणोत्तर श्रेणी \(4,12,36,108,\ldots\) का \(a_9\div a_5\) क्या होगा? / What is \(a_9\div a_5\) for the geometric progression \(4,12,36,108,\ldots\)?

Correct Answer: B. (81). Explanation: पद-संख्या का अंतर (4) है और (r=3), इसलिए अनुपात \(3^4=81\) है। परीक्षा में \(\frac{a_m}{a_n}=r^{m-n}\) लगाएँ। / The position gap is (4) and (r=3), so the ratio is \(3^4=81\). In exams, use \(\frac{a_m}{a_n}=r^{m-n}\).

Which concept should I revise for this Mathematics MCQ?

The position gap is (4) and (r=3), so the ratio is \(3^4=81\). In exams, use \(\frac{a_m}{a_n}=r^{m-n}\).

What exam hint can help solve this Mathematics question?

पद-संख्या का अंतर (4) है और (r=3), इसलिए अनुपात \(3^4=81\) है। परीक्षा में \(\frac{a_m}{a_n}=r^{m-n}\) लगाएँ।