किस (r) के लिए \(9, 9+r, 9+4r, 9+9r,\ldots\) अंकगणितीय श्रेणी होगी?

For which (r) will \(9, 9+r, 9+4r, 9+9r,\ldots\) be an arithmetic progression?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. केवल (r=0)Only (r=0)

Step 1

Concept

The consecutive differences are (r,3r,5r), which are equal only when (r=0). In such questions it is necessary to write all consecutive differences.

Step 2

Why this answer is correct

The correct answer is A. केवल (r=0) / Only (r=0). The consecutive differences are (r,3r,5r), which are equal only when (r=0). In such questions it is necessary to write all consecutive differences.

Step 3

Exam Tip

क्रमागत अंतर (r,3r,5r) हैं, ये समान तभी होंगे जब (r=0)। ऐसे प्रश्नों में सभी क्रमागत अंतर लिखना जरूरी है।

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Mathematics Answer, Explanation and Revision Hints

किस (r) के लिए \(9, 9+r, 9+4r, 9+9r,\ldots\) अंकगणितीय श्रेणी होगी? / For which (r) will \(9, 9+r, 9+4r, 9+9r,\ldots\) be an arithmetic progression?

Correct Answer: A. केवल (r=0) / Only (r=0). Explanation: क्रमागत अंतर (r,3r,5r) हैं, ये समान तभी होंगे जब (r=0)। ऐसे प्रश्नों में सभी क्रमागत अंतर लिखना जरूरी है। / The consecutive differences are (r,3r,5r), which are equal only when (r=0). In such questions it is necessary to write all consecutive differences.

Which concept should I revise for this Mathematics MCQ?

The consecutive differences are (r,3r,5r), which are equal only when (r=0). In such questions it is necessary to write all consecutive differences.

What exam hint can help solve this Mathematics question?

क्रमागत अंतर (r,3r,5r) हैं, ये समान तभी होंगे जब (r=0)। ऐसे प्रश्नों में सभी क्रमागत अंतर लिखना जरूरी है।