अनुक्रम \(7,13,23,37,\ldots\) के लिए सही स्पष्ट नियम कौन-सा है?

Which explicit rule is correct for the sequence \(7,13,23,37,\ldots\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. \(a_n=2n^2+5\)

Step 1

Concept

\(2n^2+5\) gives (7,13,23,37). In exams check a quadratic rule when second differences are constant.

Step 2

Why this answer is correct

The correct answer is A. \(a_n=2n^2+5\). \(2n^2+5\) gives (7,13,23,37). In exams check a quadratic rule when second differences are constant.

Step 3

Exam Tip

\(2n^2+5\) से (7,13,23,37) मिलते हैं। परीक्षा में दूसरे अंतर समान हों तो वर्गीय नियम जाँचें।

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Mathematics Answer, Explanation and Revision Hints

अनुक्रम \(7,13,23,37,\ldots\) के लिए सही स्पष्ट नियम कौन-सा है? / Which explicit rule is correct for the sequence \(7,13,23,37,\ldots\)?

Correct Answer: A. \(a_n=2n^2+5\). Explanation: \(2n^2+5\) से (7,13,23,37) मिलते हैं। परीक्षा में दूसरे अंतर समान हों तो वर्गीय नियम जाँचें। / \(2n^2+5\) gives (7,13,23,37). In exams check a quadratic rule when second differences are constant.

Which concept should I revise for this Mathematics MCQ?

\(2n^2+5\) gives (7,13,23,37). In exams check a quadratic rule when second differences are constant.

What exam hint can help solve this Mathematics question?

\(2n^2+5\) से (7,13,23,37) मिलते हैं। परीक्षा में दूसरे अंतर समान हों तो वर्गीय नियम जाँचें।