अनुक्रम \(4,11,22,37,56,\ldots\) का (n)वाँ पद \(a_n=n^2+3n+1\) है। (12)वाँ पद क्या होगा?
The sequence \(4,11,22,37,56,\ldots\) has (n)th term \(a_n=n^2+3n+1\). What will be the (12)th term?
Explanation opens after your attempt
B. (181)
Concept
\(a_{12}=12^2+3\times12+1=181\). Exam tip: substitute the term position for (n).
Why this answer is correct
The correct answer is B. (181). \(a_{12}=12^2+3\times12+1=181\). Exam tip: substitute the term position for (n).
Exam Tip
\(a_{12}=12^2+3\times12+1=181\) है। सूत्र में (n) की जगह पद संख्या रखें।
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