अनुक्रम \(4,9,16,25,\ldots\) का (n)वाँ पद कौन-सा है?
What is the (n)th term of the sequence \(4,9,16,25,\ldots\)?
Explanation opens after your attempt
A. \(n^2+2n+1\)
Concept
These are terms of ((n+1)2), so \(a_n=n^2+2n+1\). Check by putting (n=1).
Why this answer is correct
The correct answer is A. \(n^2+2n+1\). These are terms of ((n+1)2), so \(a_n=n^2+2n+1\). Check by putting (n=1).
Exam Tip
यह ((n+1)2) के पद हैं, इसलिए \(a_n=n^2+2n+1\)। पहले पद पर (n=1) रखकर जांचें।
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