अनुक्रम \(2,12,30,56,90,\ldots\) का सही सामान्य पद कौन सा है?
What is the correct general term for the sequence \(2,12,30,56,90,\ldots\)?
Explanation opens after your attempt
D. (a_n=n(n+1)2)
Concept
(n(n+1)2) does not give the full sequence, so care is needed. None of the given options matches all terms.
Why this answer is correct
The correct answer is D. (a_n=n(n+1)2). (n(n+1)2) does not give the full sequence, so care is needed. None of the given options matches all terms.
Exam Tip
(n(n+1)2) से (2,12,36) नहीं मिलता इसलिए सावधानी जरूरी है। दिए गए विकल्पों में कोई भी पूरा मेल नहीं खाता।
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