किस अनुक्रम में \(a_2=18\) और \(a_5=486\) दोनों सही हैं?
Which sequence has both \(a_2=18\) and \(a_5=486\)?
Explanation opens after your attempt
B. \(6,18,54,162,\ldots\)
Concept
In \(6,18,54,162,486,\ldots\), \(a_2=18\) and \(a_5=486\). Check each option up to the required positions.
Why this answer is correct
The correct answer is B. \(6,18,54,162,\ldots\). In \(6,18,54,162,486,\ldots\), \(a_2=18\) and \(a_5=486\). Check each option up to the required positions.
Exam Tip
\(6,18,54,162,486,\ldots\) में \(a_2=18\) और \(a_5=486\) हैं। विकल्पों में पद-संख्या तक जांच करें।
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