गुणोत्तर श्रेणी \(5,15,45,135,\ldots\) का तेरहवाँ पद क्या है?

What is the thirteenth term of the geometric progression \(5,15,45,135,\ldots\)?

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

C. (2657205)

Step 1

Concept

Here (a=5) and (r=3), so \(a_{13}=5\cdot3^{12}=2657205\). In exams, use \(a_n=ar^{n-1}\).

Step 2

Why this answer is correct

The correct answer is C. (2657205). Here (a=5) and (r=3), so \(a_{13}=5\cdot3^{12}=2657205\). In exams, use \(a_n=ar^{n-1}\).

Step 3

Exam Tip

यहाँ (a=5) और (r=3) है, इसलिए \(a_{13}=5\cdot3^{12}=2657205\) है। परीक्षा में \(a_n=ar^{n-1}\) लगाएँ।

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Mathematics Answer, Explanation and Revision Hints

गुणोत्तर श्रेणी \(5,15,45,135,\ldots\) का तेरहवाँ पद क्या है? / What is the thirteenth term of the geometric progression \(5,15,45,135,\ldots\)?

Correct Answer: C. (2657205). Explanation: यहाँ (a=5) और (r=3) है, इसलिए \(a_{13}=5\cdot3^{12}=2657205\) है। परीक्षा में \(a_n=ar^{n-1}\) लगाएँ। / Here (a=5) and (r=3), so \(a_{13}=5\cdot3^{12}=2657205\). In exams, use \(a_n=ar^{n-1}\).

Which concept should I revise for this Mathematics MCQ?

Here (a=5) and (r=3), so \(a_{13}=5\cdot3^{12}=2657205\). In exams, use \(a_n=ar^{n-1}\).

What exam hint can help solve this Mathematics question?

यहाँ (a=5) और (r=3) है, इसलिए \(a_{13}=5\cdot3^{12}=2657205\) है। परीक्षा में \(a_n=ar^{n-1}\) लगाएँ।