यदि \(a_1=1\) और \(a_{n+1}=a_n+3^n+n\) है तो \(a_4\) क्या होगा?

If \(a_1=1\) and \(a_{n+1}=a_n+3^n+n\), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (46)

Step 1

Concept

The added values are (4,11,30), so \(a_4=46\). Exam tip: add both \(3^n\) and (n).

Step 2

Why this answer is correct

The correct answer is C. (46). The added values are (4,11,30), so \(a_4=46\). Exam tip: add both \(3^n\) and (n).

Step 3

Exam Tip

जुड़ने वाले मान (4,11,30) हैं इसलिए \(a_4=46\) है। \(3^n\) और (n) दोनों जोड़ें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=1\) और \(a_{n+1}=a_n+3^n+n\) है तो \(a_4\) क्या होगा? / If \(a_1=1\) and \(a_{n+1}=a_n+3^n+n\), what is \(a_4\)?

Correct Answer: C. (46). Explanation: जुड़ने वाले मान (4,11,30) हैं इसलिए \(a_4=46\) है। \(3^n\) और (n) दोनों जोड़ें। / The added values are (4,11,30), so \(a_4=46\). Exam tip: add both \(3^n\) and (n).

Which concept should I revise for this Mathematics MCQ?

The added values are (4,11,30), so \(a_4=46\). Exam tip: add both \(3^n\) and (n).

What exam hint can help solve this Mathematics question?

जुड़ने वाले मान (4,11,30) हैं इसलिए \(a_4=46\) है। \(3^n\) और (n) दोनों जोड़ें।