यदि \(a_1=4\) और \(a_{n+1}=3a_n+n\) है तो \(a_4\) क्या होगा?

If \(a_1=4\) and \(a_{n+1}=3a_n+n\), what is \(a_4\)?

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

C. (126)

Step 1

Concept

The terms are (4,13,41,126), so \(a_4=126\). Exam tip: find \(3a_n\) first and then add (n).

Step 2

Why this answer is correct

The correct answer is C. (126). The terms are (4,13,41,126), so \(a_4=126\). Exam tip: find \(3a_n\) first and then add (n).

Step 3

Exam Tip

पद (4,13,41,126) हैं इसलिए \(a_4=126\) है। हर चरण में पहले \(3a_n\) निकालें फिर (n) जोड़ें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=4\) और \(a_{n+1}=3a_n+n\) है तो \(a_4\) क्या होगा? / If \(a_1=4\) and \(a_{n+1}=3a_n+n\), what is \(a_4\)?

Correct Answer: C. (126). Explanation: पद (4,13,41,126) हैं इसलिए \(a_4=126\) है। हर चरण में पहले \(3a_n\) निकालें फिर (n) जोड़ें। / The terms are (4,13,41,126), so \(a_4=126\). Exam tip: find \(3a_n\) first and then add (n).

Which concept should I revise for this Mathematics MCQ?

The terms are (4,13,41,126), so \(a_4=126\). Exam tip: find \(3a_n\) first and then add (n).

What exam hint can help solve this Mathematics question?

पद (4,13,41,126) हैं इसलिए \(a_4=126\) है। हर चरण में पहले \(3a_n\) निकालें फिर (n) जोड़ें।