अनुक्रम \(2,6,12,20,\ldots\) के लिए सही सामान्य पद कौन-सा है?
Which general term is correct for the sequence \(2,6,12,20,\ldots\)?
Explanation opens after your attempt
D. (a_n=n(n+1))
Concept
(n(n+1)) gives (2,6,12,20). In exams, check rules involving the product of consecutive numbers.
Why this answer is correct
The correct answer is D. (a_n=n(n+1)). (n(n+1)) gives (2,6,12,20). In exams, check rules involving the product of consecutive numbers.
Exam Tip
(n(n+1)) से (2,6,12,20) मिलते हैं। परीक्षा में लगातार दो संख्याओं के गुणन वाले नियम को जाँचें।
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