अनुक्रम \(5,8,13,20,\ldots\) के लिए सही (n)वाँ पद कौन-सा है?
Which is the correct (n)th term for the sequence \(5,8,13,20,\ldots\)?
Explanation opens after your attempt
A. \(n^2+4\)
Concept
The terms are \(1^2+4,2^2+4,3^2+4,\ldots\), so \(a_n=n^2+4\). Identify the square with the constant number.
Why this answer is correct
The correct answer is A. \(n^2+4\). The terms are \(1^2+4,2^2+4,3^2+4,\ldots\), so \(a_n=n^2+4\). Identify the square with the constant number.
Exam Tip
पद \(1^2+4,2^2+4,3^2+4,\ldots\) हैं, इसलिए \(a_n=n^2+4\)। वर्ग के साथ स्थिर संख्या पहचानें।
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