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 \(a_6\)?
Explanation opens after your attempt
D. (486)
Concept
\(a_6=2\times3^5=486\). Exam tip: when starting from the first term, the exponent is (n-1).
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).
Exam Tip
\(a_6=2\times3^5=486\) है। पहले पद से गिनते समय घात (n-1) होती है।
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