गुणोत्तर श्रेणी \(9,36,144,\ldots\) का कौन-सा पद (9216) है?

Which term of the geometric progression \(9,36,144,\ldots\) is (9216)?

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Correct Answer

B. छठा पद(6)th term

Step 1

Concept

From \(9\cdot4^{n-1}=9216\), \(4^{n-1}=1024=4^5\), so (n=6). In exams, equate powers to find the term number.

Step 2

Why this answer is correct

The correct answer is B. छठा पद / (6)th term. From \(9\cdot4^{n-1}=9216\), \(4^{n-1}=1024=4^5\), so (n=6). In exams, equate powers to find the term number.

Step 3

Exam Tip

\(9\cdot4^{n-1}=9216\) से \(4^{n-1}=1024=4^5\), इसलिए (n=6) है। परीक्षा में घात बराबर करके पद संख्या निकालें।

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Mathematics Answer, Explanation and Revision Hints

गुणोत्तर श्रेणी \(9,36,144,\ldots\) का कौन-सा पद (9216) है? / Which term of the geometric progression \(9,36,144,\ldots\) is (9216)?

Correct Answer: B. छठा पद / (6)th term. Explanation: \(9\cdot4^{n-1}=9216\) से \(4^{n-1}=1024=4^5\), इसलिए (n=6) है। परीक्षा में घात बराबर करके पद संख्या निकालें। / From \(9\cdot4^{n-1}=9216\), \(4^{n-1}=1024=4^5\), so (n=6). In exams, equate powers to find the term number.

Which concept should I revise for this Mathematics MCQ?

From \(9\cdot4^{n-1}=9216\), \(4^{n-1}=1024=4^5\), so (n=6). In exams, equate powers to find the term number.

What exam hint can help solve this Mathematics question?

\(9\cdot4^{n-1}=9216\) से \(4^{n-1}=1024=4^5\), इसलिए (n=6) है। परीक्षा में घात बराबर करके पद संख्या निकालें।