अनुक्रम \(15,45,135,405,\ldots\) के लिए सही सामान्य पद कौन-सा है?

Which general term is correct for the sequence \(15,45,135,405,\ldots\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. \(a_n=5\cdot3^n\)

Step 1

Concept

\(5\cdot3^n\) gives (15,45,135,405). In exams check both the base and multiplier in geometric growth.

Step 2

Why this answer is correct

The correct answer is B. \(a_n=5\cdot3^n\). \(5\cdot3^n\) gives (15,45,135,405). In exams check both the base and multiplier in geometric growth.

Step 3

Exam Tip

\(5\cdot3^n\) से (15,45,135,405) मिलते हैं। परीक्षा में गुणोत्तर वृद्धि में आधार और गुणक दोनों जाँचें।

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Mathematics Answer, Explanation and Revision Hints

अनुक्रम \(15,45,135,405,\ldots\) के लिए सही सामान्य पद कौन-सा है? / Which general term is correct for the sequence \(15,45,135,405,\ldots\)?

Correct Answer: B. \(a_n=5\cdot3^n\). Explanation: \(5\cdot3^n\) से (15,45,135,405) मिलते हैं। परीक्षा में गुणोत्तर वृद्धि में आधार और गुणक दोनों जाँचें। / \(5\cdot3^n\) gives (15,45,135,405). In exams check both the base and multiplier in geometric growth.

Which concept should I revise for this Mathematics MCQ?

\(5\cdot3^n\) gives (15,45,135,405). In exams check both the base and multiplier in geometric growth.

What exam hint can help solve this Mathematics question?

\(5\cdot3^n\) से (15,45,135,405) मिलते हैं। परीक्षा में गुणोत्तर वृद्धि में आधार और गुणक दोनों जाँचें।