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

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

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (29)

Step 1

Concept

The terms are (1,3,10,29), so \(a_4=29\). Exam tip: double first and then add \(n^2\).

Step 2

Why this answer is correct

The correct answer is C. (29). The terms are (1,3,10,29), so \(a_4=29\). Exam tip: double first and then add \(n^2\).

Step 3

Exam Tip

पद (1,3,10,29) हैं इसलिए \(a_4=29\) है। पहले दोगुना करें फिर \(n^2\) जोड़ें।

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Mathematics Answer, Explanation and Revision Hints

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

Correct Answer: C. (29). Explanation: पद (1,3,10,29) हैं इसलिए \(a_4=29\) है। पहले दोगुना करें फिर \(n^2\) जोड़ें। / The terms are (1,3,10,29), so \(a_4=29\). Exam tip: double first and then add \(n^2\).

Which concept should I revise for this Mathematics MCQ?

The terms are (1,3,10,29), so \(a_4=29\). Exam tip: double first and then add \(n^2\).

What exam hint can help solve this Mathematics question?

पद (1,3,10,29) हैं इसलिए \(a_4=29\) है। पहले दोगुना करें फिर \(n^2\) जोड़ें।