यदि \(a_1=9\) और \(a_{n+1}=a_n+2a_n\) है तो \(a_3\) क्या होगा?

If \(a_1=9\) and \(a_{n+1}=a_n+2a_n\), what is \(a_3\)?

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

D. (81)

Step 1

Concept

This rule is the same as \(a_{n+1}=3a_n\). The terms are (9,27,81), so \(a_3=81\).

Step 2

Why this answer is correct

The correct answer is D. (81). This rule is the same as \(a_{n+1}=3a_n\). The terms are (9,27,81), so \(a_3=81\).

Step 3

Exam Tip

यह नियम \(a_{n+1}=3a_n\) के समान है। पद (9,27,81) हैं इसलिए \(a_3=81\) है।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=9\) और \(a_{n+1}=a_n+2a_n\) है तो \(a_3\) क्या होगा? / If \(a_1=9\) and \(a_{n+1}=a_n+2a_n\), what is \(a_3\)?

Correct Answer: D. (81). Explanation: यह नियम \(a_{n+1}=3a_n\) के समान है। पद (9,27,81) हैं इसलिए \(a_3=81\) है। / This rule is the same as \(a_{n+1}=3a_n\). The terms are (9,27,81), so \(a_3=81\).

Which concept should I revise for this Mathematics MCQ?

This rule is the same as \(a_{n+1}=3a_n\). The terms are (9,27,81), so \(a_3=81\).

What exam hint can help solve this Mathematics question?

यह नियम \(a_{n+1}=3a_n\) के समान है। पद (9,27,81) हैं इसलिए \(a_3=81\) है।