अनुक्रम \(3,18,57,132,\ldots\) के लिए सही सामान्य पद कौन-सा है?
Which general term is correct for the sequence \(3,18,57,132,\ldots\)?
Explanation opens after your attempt
A. \(a_n=2n^3+n\)
Concept
\(2n^3+n\) gives (3,18,57,132). In exams test cube-based options with small (n).
Why this answer is correct
The correct answer is A. \(a_n=2n^3+n\). \(2n^3+n\) gives (3,18,57,132). In exams test cube-based options with small (n).
Exam Tip
\(2n^3+n\) से (3,18,57,132) मिलते हैं। परीक्षा में घन आधारित विकल्पों को छोटे (n) से जाँचें।
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