अनुक्रम \(2,8,18,32,\ldots\) का (n)वाँ पद कौन-सा है?
What is the (n)th term of the sequence \(2,8,18,32,\ldots\)?
Explanation opens after your attempt
Correct Answer
A. \(2n^2\)
Concept
The terms are (2(1)2,2(2)2,2(3)2,\ldots), so \(a_n=2n^2\). Identify both the square and the multiplier.
Why this answer is correct
The correct answer is A. \(2n^2\). The terms are (2(1)2,2(2)2,2(3)2,\ldots), so \(a_n=2n^2\). Identify both the square and the multiplier.
Exam Tip
पद (2(1)2,2(2)2,2(3)2,\ldots) हैं, इसलिए \(a_n=2n^2\)। वर्ग और गुणक दोनों पहचानें।
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