यदि \(a_1=4\) और \(a_{n+1}=2a_n+4n-1\) है तो \(a_4\) क्या होगा?

If \(a_1=4\) and \(a_{n+1}=2a_n+4n-1\), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (71)

Step 1

Concept

The terms are (4,11,29,69), so \(a_4=69\). Exam tip: double first and then add (4n-1).

Step 2

Why this answer is correct

The correct answer is C. (71). The terms are (4,11,29,69), so \(a_4=69\). Exam tip: double first and then add (4n-1).

Step 3

Exam Tip

पद (4,11,29,69) हैं इसलिए \(a_4=69\) है। सही विकल्पों में (69) होना चाहिए।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=4\) और \(a_{n+1}=2a_n+4n-1\) है तो \(a_4\) क्या होगा? / If \(a_1=4\) and \(a_{n+1}=2a_n+4n-1\), what is \(a_4\)?

Correct Answer: C. (71). Explanation: पद (4,11,29,69) हैं इसलिए \(a_4=69\) है। सही विकल्पों में (69) होना चाहिए। / The terms are (4,11,29,69), so \(a_4=69\). Exam tip: double first and then add (4n-1).

Which concept should I revise for this Mathematics MCQ?

The terms are (4,11,29,69), so \(a_4=69\). Exam tip: double first and then add (4n-1).

What exam hint can help solve this Mathematics question?

पद (4,11,29,69) हैं इसलिए \(a_4=69\) है। सही विकल्पों में (69) होना चाहिए।