अनुक्रम \(0,3,10,21,36,\ldots\) का सामान्य पद \(a_n=2n^2-3n+1\) है। (12)वाँ पद क्या होगा?
The sequence \(0,3,10,21,36,\ldots\) has general term \(a_n=2n^2-3n+1\). What will be the (12)th term?
Explanation opens after your attempt
B. (253)
Concept
\(a_{12}=2\times12^2-3\times12+1=253\). Exam tip: write each step clearly in longer calculations.
Why this answer is correct
The correct answer is B. (253). \(a_{12}=2\times12^2-3\times12+1=253\). Exam tip: write each step clearly in longer calculations.
Exam Tip
\(a_{12}=2\times12^2-3\times12+1=253\) है। लंबी गणना में हर चरण साफ लिखें।
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