यदि \(a_1=2\) और \(a_{n+1}=2a_n+3n-1\) है तो \(a_4\) क्या होगा?

If \(a_1=2\) and \(a_{n+1}=2a_n+3n-1\), what is \(a_4\)?

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

C. (42)

Step 1

Concept

The terms are (2,6,17,42), so \(a_4=42\). Exam tip: (3n-1) changes at every step.

Step 2

Why this answer is correct

The correct answer is C. (42). The terms are (2,6,17,42), so \(a_4=42\). Exam tip: (3n-1) changes at every step.

Step 3

Exam Tip

पद (2,6,17,42) हैं इसलिए \(a_4=42\) है। (3n-1) का मान हर चरण में नया होता है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=2\) और \(a_{n+1}=2a_n+3n-1\) है तो \(a_4\) क्या होगा? / If \(a_1=2\) and \(a_{n+1}=2a_n+3n-1\), what is \(a_4\)?

Correct Answer: C. (42). Explanation: पद (2,6,17,42) हैं इसलिए \(a_4=42\) है। (3n-1) का मान हर चरण में नया होता है। / The terms are (2,6,17,42), so \(a_4=42\). Exam tip: (3n-1) changes at every step.

Which concept should I revise for this Mathematics MCQ?

The terms are (2,6,17,42), so \(a_4=42\). Exam tip: (3n-1) changes at every step.

What exam hint can help solve this Mathematics question?

पद (2,6,17,42) हैं इसलिए \(a_4=42\) है। (3n-1) का मान हर चरण में नया होता है।