अनुक्रम \(2,6,18,54,\ldots\) में \(a_1=2\) और \(a_{n+1}=3a_n\) है। \(a_6\) क्या है?

In the sequence \(2,6,18,54,\ldots\), \(a_1=2\) and \(a_{n+1}=3a_n\). What is \(a_6\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

D. (486)

Step 1

Concept

\(a_6=2\times3^5=486\). Exam tip: when starting from the first term, the exponent is (n-1).

Step 2

Why this answer is correct

The correct answer is D. (486). \(a_6=2\times3^5=486\). Exam tip: when starting from the first term, the exponent is (n-1).

Step 3

Exam Tip

\(a_6=2\times3^5=486\) है। पहले पद से गिनते समय घात (n-1) होती है।

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Mathematics Answer, Explanation and Revision Hints

अनुक्रम \(2,6,18,54,\ldots\) में \(a_1=2\) और \(a_{n+1}=3a_n\) है। \(a_6\) क्या है? / In the sequence \(2,6,18,54,\ldots\), \(a_1=2\) and \(a_{n+1}=3a_n\). What is \(a_6\)?

Correct Answer: D. (486). Explanation: \(a_6=2\times3^5=486\) है। पहले पद से गिनते समय घात (n-1) होती है। / \(a_6=2\times3^5=486\). Exam tip: when starting from the first term, the exponent is (n-1).

Which concept should I revise for this Mathematics MCQ?

\(a_6=2\times3^5=486\). Exam tip: when starting from the first term, the exponent is (n-1).

What exam hint can help solve this Mathematics question?

\(a_6=2\times3^5=486\) है। पहले पद से गिनते समय घात (n-1) होती है।