अनुक्रम \(5,12,23,38,57,\ldots\) के लिए सही सामान्य पद कौन सा है?

Which is the correct general term for the sequence \(5,12,23,38,57,\ldots\)?

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

D. \(a_n=2n^2+n+2\)

Step 1

Concept

\(2n^2+n+2\) gives the starting terms (5,12,23). Exam tip: check at least three terms before choosing a formula.

Step 2

Why this answer is correct

The correct answer is D. \(a_n=2n^2+n+2\). \(2n^2+n+2\) gives the starting terms (5,12,23). Exam tip: check at least three terms before choosing a formula.

Step 3

Exam Tip

\(2n^2+n+2\) से शुरुआती पद (5,12,23) मिलते हैं। सूत्र चुनते समय कम से कम तीन पद जाँचें।

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Mathematics Answer, Explanation and Revision Hints

अनुक्रम \(5,12,23,38,57,\ldots\) के लिए सही सामान्य पद कौन सा है? / Which is the correct general term for the sequence \(5,12,23,38,57,\ldots\)?

Correct Answer: D. \(a_n=2n^2+n+2\). Explanation: \(2n^2+n+2\) से शुरुआती पद (5,12,23) मिलते हैं। सूत्र चुनते समय कम से कम तीन पद जाँचें। / \(2n^2+n+2\) gives the starting terms (5,12,23). Exam tip: check at least three terms before choosing a formula.

Which concept should I revise for this Mathematics MCQ?

\(2n^2+n+2\) gives the starting terms (5,12,23). Exam tip: check at least three terms before choosing a formula.

What exam hint can help solve this Mathematics question?

\(2n^2+n+2\) से शुरुआती पद (5,12,23) मिलते हैं। सूत्र चुनते समय कम से कम तीन पद जाँचें।