यदि \(a_1=6\) और \(a_{n+1}=a_n+n^2+2n\) है तो \(a_4\) क्या होगा?

If \(a_1=6\) and \(a_{n+1}=a_n+n^2+2n\), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (32)

Step 1

Concept

The terms are (6,9,17,32), so \(a_4=32\). Exam tip: calculate the new value of \(n^2+2n\) each time.

Step 2

Why this answer is correct

The correct answer is C. (32). The terms are (6,9,17,32), so \(a_4=32\). Exam tip: calculate the new value of \(n^2+2n\) each time.

Step 3

Exam Tip

पद (6,9,17,32) हैं इसलिए \(a_4=32\) है। \(n^2+2n\) का मान हर बार नया निकालें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=6\) और \(a_{n+1}=a_n+n^2+2n\) है तो \(a_4\) क्या होगा? / If \(a_1=6\) and \(a_{n+1}=a_n+n^2+2n\), what is \(a_4\)?

Correct Answer: C. (32). Explanation: पद (6,9,17,32) हैं इसलिए \(a_4=32\) है। \(n^2+2n\) का मान हर बार नया निकालें। / The terms are (6,9,17,32), so \(a_4=32\). Exam tip: calculate the new value of \(n^2+2n\) each time.

Which concept should I revise for this Mathematics MCQ?

The terms are (6,9,17,32), so \(a_4=32\). Exam tip: calculate the new value of \(n^2+2n\) each time.

What exam hint can help solve this Mathematics question?

पद (6,9,17,32) हैं इसलिए \(a_4=32\) है। \(n^2+2n\) का मान हर बार नया निकालें।